According to the requirement of operation result, add operation symbol and bracket 1 / 20.43/101/50.1 = 100.30.30.30.30.30.3 = 0 0.3 0.3 0.3 0.3 0.3=1 0.3 0.3 0.3 0.3 0.3=2 0.3 0.3 0.3 0.3 0.3=4

According to the requirement of operation result, add operation symbol and bracket 1 / 20.43/101/50.1 = 100.30.30.30.30.30.3 = 0 0.3 0.3 0.3 0.3 0.3=1 0.3 0.3 0.3 0.3 0.3=2 0.3 0.3 0.3 0.3 0.3=4

(0.3 ×0.3- 0.3- 0.3)÷ 0.3=1
(0.3× 0.3÷0.3+0.3)÷ 0.3=2
(0.3+ 0.3+ 0.3+ 0.3)÷ 0.3=4
(1/2×0.4+ 3/10)× 1/5÷ 0.1=10
0.3× 0.3- 0.3 -0.3 -0.3=0