4/9乘15/16除5/6123

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4/9乘15/16除5/61234/9乘15/16除5/61234/9乘15/16除5/61231/24/9×15/16÷5/6=5/12÷5/6=1/2

4/9乘15/16除5/6123
4/9乘15/16除5/6
123

4/9乘15/16除5/6123
1/2

4/9×15/16÷5/6
=5/12÷5/6
=1/2