189,391 = 190,000 (rounded to 2 significant figures).
One million divided by 43,560 is 23(22.95684113865932).
10890
10890
188.5714
12.1
3.1572
66.5038
3.0992
43560, multiplied by the number of strands you intend to use, divided by the number printed on the side of the roll, multiplied by 1.2 to allow for sagging and mistakes.
23 divided by 1 = 23
1.5666
One acre is equal to 43,560 square feet so 2.3 x 43,560 = 100,188 square feet.