To simplify this expression, we can perform the following steps:
-4 * 7/5 * -3/4 / 7/15
First, let's simplify multiplication and division separately:
(-4 * -3) * (7/5 * 15/7)
Multiplying -4 and -3 gives us 12.
12 * (7/5 * 15/7)
Now, let's simplify the remaining multiplications:
12 * (105/35)
Multiplying 12 and 105 gives us 1260.
1260/35
Finally, dividing 1260 by 35 gives us 36.
Therefore, -4 * 7/5 * -3/4 / 7/15 equals 36.