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Q.
- Multiply the numbers: Multiply the two given numbers.To multiply by , align the decimal points and multiply as if they were whole numbers.Calculation: \begin{align*} &2.13 \ &\times 0.197 \ &\underline{\phantom{0}------} \ &\phantom{0}1491 &\text{(This is inline_latex_0 multiplied by inline_latex_4, with three decimal places to the right)} \ &\phantom{0000} &\text{(This is inline_latex_0 multiplied by inline_latex_6, with two decimal places to the right; however, since inline_latex_6 is zero, the result is inline_latex_8)} \ &426 &\text{(This is inline_latex_0 multiplied by inline_latex_10, with one decimal place to the right)} \ &\underline{\phantom{0}------} \ &\phantom{0}41941 &\text{(Sum of the above products, before adjusting the decimal place)} \end{align*}Now, count the total number of decimal places in the original numbers ( in and in ), which is .Place the decimal point in the result to have decimal places from the right.Final result:
