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Multiply decimals
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100

0.1 x 0.2

.02

100

1/4 x 15/7

15/28

100

0.9 ÷ 0.2

4.5

100

1/2 ÷ 1/4

2

200

-2.3 x 10

-23

200

90/10000000000 x 190/7

171/700000000

200

1.58 ÷ 7.6

0.21

200

1/50 ÷ 1/60

1.2

300

139.18 x 50.71 

7057.8178

300

14/90 x 90/14

1

300

29 ÷ 14.5

2

300

1/65 ÷ 1/70

1.08

400

231.8 x 20

4636

400

17/17 x 90/18

5

400

18.5 ÷ 27.8

0.67

400

5/75 ÷ 10/80

0.53

500

1918.1 x 10.8

20715.48

500

1785/173831 x 10/6

425/24833

500

108.77 ÷ 98.3

1.10

500

70/1030 ÷ 90/87

0.065