400
0.0002
42.1053
4000
4000
285.7143
57.1429
10% of 40000 is 4000 (divide it by 10) so half of that is 2000 (10 divided by 2 is 5)
250
80
0.0008
To divide 4000 by 80, you can simplify the calculation by first reducing both numbers. Since 80 can be expressed as 8 multiplied by 10, you can divide 4000 by 8 to get 500, and then divide that result by 10, yielding 50. Alternatively, directly dividing 4000 by 80 gives you 50 as well. Thus, 4000 divided by 80 equals 50.
10 is 0,25% of 4000, since 4000 x 0,0025 = 10.