Multiply the former term of the ratio by 5, and divide the latter term by 5, how many times the ratio is enlarged to the original
比的前项乘5，后项除以5，比值扩大到原来的多少倍
<gadget id="calculator">1 / 10 / 5</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">5 / 10 / 5 / (1/50)</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<result>25</result>