...subtract columns of figures. Eg: [789+546+123+852+6547+65]=8922 OR [789+587+6598+458] - [ 548+2587+456+584]= 8432 - 4175 = 4257 I hope this solution solves your
...by the percentage expressed as a decimal: for example, to find 50% of 4 4 x .50 to find 3% of 456, take: 456 x ...
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