The little sloppy forgot to add 0 at the end of the product when calculating a two-digit number multiplied by tens, and the result was how many times less than the correct product.
小马虎在口算一道两位数乘整十数时，忘记在积得末尾添上0，结果比正确的积少了多少倍．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<result>9</result>