One and two thirds multiplied by nine tenths equals

One and two thirds multiplied by nine tenths equals

three-seconds
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What's 9 out of 10 times 2 out of 3 plus 1 out of 2

10:11, that's one and a tenth
(9 / 10) * (2 / 3) + 1 / 2 = 18 / 30 + 1 / 2 = 18 / 30 + 15 / 30 = 33 / 30 = 11 / 10 = 1 and 1 / 10

100 + 100-100 + 100 + 100-200 + 900 + 1000-1000 + 10000-1000 + 9999 = how much

19999

Simple fraction operation 1-1 / 10-1 / 100-1 / 1000-1 / 10000
It's not a decimal!

1-1/10-1/100-1/1000-1/10000
=1-（1/10+1/100+1/1000+1/10000）
=1-1111/10000
=8889/1000