125 tonnes of Gold = $7.7 Billion
The US gold reserves total 8,133 tonnes which equates to $483,011,505,951 (261481643.1 ounces at $1,847.21 per oz.).
USA 8133 = $261,481,643 current value in USD.
US Tons of Gold: 8133
Ounces of Gold per 1 Ton of Gold: 32,150.7
Today’s Value of 1 Ounce of Gold: $1859.90
8133 Tons X 32,150.7 Ounces per Ton X $1859.90 per Ounce of Gold =
Total US Gold Value Today: $486,329,708,001.69
gold price = $1848/oz
US gold supply = 8133 tonnes
286,883,442oz of gold x $1848
$530,160,600,816 worth of gold in US treasury
Canada has literally zero gold in its reverses; therefore completing this task will be either too easy or impossible because the output for 0 gold is $0 USD. 
But I prefer to participant in this task, therefore I have no option but to choose a country that has gold.
I will for this reason pick China.
According to Trading Economics, China has 1948 Tonnes of gold in their reserves. Tonne is a metric unit in mass measurement, and one tonne is equivalent to 1000 kilograms. SInce the task requires the calculation to measure the value of gold in ($)USD terms, tonnes must be convert to the imperial unit, Tons
1948 Tonnes = 2147.302 US Tons
2147.302 US Tons = 68713664 US Ounces (i.e. Oz)
1 Oz of gold currently is $ 1852 USD.
68713664 Oz * $ 1852 USD = $ 127,257,705,728 USD
China owns approximately $128 Billion US Dollars in gold, thus making it the sixth wealthiest country in the world, after Russia (5th), France (4th), Italy (3rd), Germany (2nd), and of course AMERICA #1.
Meanwhile Canada owns absolutely none, which really worries me because Canada has plenty of gold mines. Yet where did they go? How come little countries with limited resources like Hungary and Slovakia have at least 30 Tonnes of Gold in their reserves, meanwhile Canada being the 2nd largest country on Earth with “unlimited” resources have 0 gold? 
Zero Gold since 2016.
1 Like
USA - 8133
= 260,256,000 oz.
x
$1,854.10 = $482,541,000,000 USD
Switzerland : 1040 tonnes
at current price of $59463.13 for a kilo
59463.13*1000= 59463139 dollars for 1 tonnes times 1040 equal 61 841 655 200USD
USA - Gold tonnes
8133
$482,600,000,000.
Gold reserve Denmark
66.55 tons = 2.129.600 ounces
currently gold is valued at $1839 per ounce
Value: $3,916,334,400
2452 tonnes of gold in the italian gold reserves 2.224.417 in Kilogram
The spot price is 59.353,31$ or 49.058,00€ for 1 Kilograms at 01/27/2021 18:08:01
For the total amount in value there is 132.036.337.242,60$ or 109.125.449.186€ now.
As of September 2020, Australia has 67.74 tonnes of gold, amounting to a USD value of approximately $4 trillion.
Answer:
Canada: 0 tonnes worth 0 USD. Yikes!!
US
8133t
$480,760,823,880
South Africa has 125 tonnes
This equates to $7,404,375,000 USD
Romania - 104 T of gold => $6,17 billion
US has approx 8,133 tons of gold in reserves
Current price per ounce = $1840
32,000 ounces in a ton
Right now gold is $1840/OZ x 32,000 = 58,880,000
58,880,000 x 8133 tons = $478,871,040,000 in gold
South Africa 125 tonnes of gold reserves
Todays gold spot price is $59,168
So total $7, 396, 000, 000
Denmark 66,55 tonnes and ~309.457.500 USD in value.
The SNB holds 1040 tonnes of gold as of Sep 2020 which is the equivalent of about 6.15x10^10.