According to 46*25=1150, directly calculate how much 11.5/4.6= without calculation.
根据46*25=1150，不计算直接算出11.5/4.6=多少．
<gadget id="calculator">2.5 / 4.6</gadget>
<output>0.543478</output>

<gadget id="calculator">4.6 * 0.543478</gadget>
<output>2.499999</output>

<result>2.499999</result>