Answer:
397,561 copies have been sold to date
Step-by-step explanation:
If 32,600 copies represent 8.2% of the whole
Let's assume the whole is Y
Therefore 8.2% of Y = 32,600 copies
Let's make Y the subject of formula by dividing both sides of the equation by 8.2%
(8.2% x Y) divided by 8.2% = 32,600 divided by 8.2%
Y = 32,600 / 8.2% = 397,561