What's the sum of 14 / 15 plus 4 / 5 and 7 / 16, and then divide by 3 / 4

[14/15+(4/5+7/16)]÷3/4
=(14/15+4/5+7/16)×4/3
=(14/15+12/15+7/16)×4/3
=(26/15+7/16)×4/3
=(416/240+105/240)×4/3
=521/240×4/3
=521/180

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