80 - 6000

x - 7000

6000x = 560000

x = 560000/6000

x = **$93,333...**

Ok, but I don't understand your calculations, could you please explain. Should we take under consideration the last BTC rate?

Let's say you bought 0.01333333 BTC (using $80 when BTC price was $6000).

Then you sold this amount 0.01333333 BTC when BTC price was $7000 and made $93,33. $13.33 profit.

The calculation is simple 'rule of three'. I took in consideration the last BTC rate, yes ($7000 as you said).

**80 - 6000**

x - 7000Multiply diagonally (80 . 7000 and 6000 . X)

**6000x = 560000**(Then move 6000 to the other side with inverse signal [inverse of multiplication is division]).

**x = 560000/6000**(Then solve the operation to find the X value, that is the amount you are looking for).

**x = 93.333...**