The little sloppy forgot to add 0 at the end of the product when calculating a multiplication with a 0 at the end of the multiplier. The result is 450 less than the correct result, what is the correct product.
小马虎在计算一道乘数末尾有0的乘法时，忘记在积的末尾添上0．结果比正确结果少450，正确的积是多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">450 / (9/10)</gadget>
<output>500</output>

<result>500</result>