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LOGARITHMS

Multiplying and dividing numbers with lots of digits without a calculator is a slow process.

For example, try multiplying 3.345 by 5.276

3.345

5.276

17725000

669000

234150

20070

17.648220

A simpler way is to convert these numbers into logarithms by looking them up on a logarithm table, add the logarithms together then convert the answer back to ordinary numbers.