Approximately 70.423%.
15 ÷ 21.3 = (extremely long answer - at least 30 digets, but appx. 70.423%).
Hope this helps!
85% of 213 = 85% * 213 = 0.85 * 213 = 181.05
312% of 213= 312% * 213= 3.12 * 213= 664.56
21% of 213= 21% * 213= 0.21 * 213= 44.73
213 - 0.4*213 = 213 - 85.2 = 127.8
It is: 29% of 213 = 61.77
30% of 213 = 213*30/100 = 63.9
40% of 213 = 40% * 213 = 0.4 * 213 = 85.2
213/10*3=63.9
.213
213
21.3% = 213/1000
14.2