a/b=4.5, move the decimal point of a to the left and divide by b, what is the quotient.
a/b=4.5，把a的小数点向左移动一位后再除以b，商是多少．
<gadget id="calculator">4.5 / 10</gadget>
<output>0.45</output>

<result>0.45</result>