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Can anyone show me how to multiply $-.05$ times $-.04$ by hand please?

I do it by hand and I get $.20$ but my book says the correct result is $.002$.

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Since $.05$ has $2$ places to the right of the decimal and $.04$ has $2$ places to the right of the decimal, the answer needs $2+2=4$ places to the right, like so: $ \begin{array}{r} .05\\ \times.04\\ \hline .0020 \end{array} $

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