How many times is the product of 420*380 larger than the product of 42*38?
420*380的积比42*38的积扩大了多少倍．
<gadget id="calculator">42 * 38</gadget>
<output>1_596</output>

<gadget id="calculator">159_600 / 1_596</gadget>
<output>100</output>

<result>100</result>