87 + 89 divided by 2 x 2 x 2 x 6 x 5 x 4 x 2 x 12 x3

First you add 87 + 89 which equals 176.

second you multiply all the numbers you want to divide, which, to save time, equals 69,120

176 / 69,120 = 0.0025462962963 (0.003 if needing to round)

The answer is. 002546296