2 x 63360 = 126720
63,360 multiplied by 25,000 is 1,584,000,000
31680
63360 * 2 = 126,720
126,720
1 mile = 63360 in ⇒ 1/2 mile = 1/2 x 63360 in = 31680 in
Convert to the same units, then simplify: 1 mile = 63360 in → 1 in : 2 miles = 1 in : 2 x 63360 in = 1 : 126720
-2 multiplied by 2 is -4
2700000000 x 63360 = 171072000000000
100000 x 63360 = 6336000000
63360 x 16 = 1013760
It means multiplied by 2.
10560