41
4.3902
Yes.
41.3636
4.9762
0.0242
492/12 = 41
Yes. This is because 158 is approximately 160 and 41 is approximately 40. 160/40 = 4, therefore 4 is a good estimate of 158/41.
1
5/4 divided by 3/4 = 20/12 simplified to 5/3
41
81/2 divided by 2 is 41/4