Convert rubles to bitcoins at the rate of

Recall school math, proportions:

• 420943.9960 rub. - this is 1 BTC
• 1 rub. - this is X BTC

It turns out the equality:

 420943.9960 / 1 = 1 / Х 

Which is equivalent to:

 1 / 420943.9960 = X / 1 

So the required number is calculated as:

 Х = 1 / 420943.9960 

For one ruble, you can buy 0.0000023 bitcoin or 2.3756 μBTC .

You can not display, and remember a simple formula . The result does not change.