13
7 divided by 312 is 0.0224358974359
312 divided by 10 is 31.2
0.016
312
156
78
312 12*26 = 312 13*24 = 312
0.1538
13.5652
The Earth completes one full rotation on its axis approximately every 24 hours. Therefore, in 312 hours, the Earth would rotate approximately 13 times (312 divided by 24).
3
0.0256