The quotients are equal because they both go in the same number of times. The second pair of quotients just have an extra 0 at the end which just changes the place value of the number.
Simple...
you have:

and

To solve for....

Multiply to remove the denominator-->>

n=12*3
n=36
Then-->>>

Do the same thing-->>

n=-12*3
n=-36
Thus, your answer.
Answer:
$280
Step-by-step explanation:
Sell 24 pieces in 3 hours, so 8 pieces in 1 hour
in 7 hours 8*7 = 56 pieces, each for $5
56 piece cost 5^56 = $280