85% of 213 = 85% * 213 = 0.85 * 213 = 181.05
312% of 213= 312% * 213= 3.12 * 213= 664.56
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=9261 213=21x21x21
213
.213
55/21 = 213/21
21.3% = 213/1000