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Math

## The harmonic mean

Calculator based on the entered numbers separated by commas calculate the harmonic mean.

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Financial

## Net return on sales (ROS)

Calculator based on the values entered and net profit calculated return on sales ROS. ROS announces net income (after tax), attributable to every penny of products, goods and services.

16882

Savings

## Calculate how much you spend on cigarettes

Calculator helps you calculate the annual expenditure on cigarettes.

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Building

## Consumption Calculator paint Flügger

Calculator based on the data entered the room indicates the approximate amount of paint needed to make Flügger his painting.