The sum of the former term, the latter term and the ratio of a ratio is 125, and the ratio is 5. What is the former term?
一个比的前项、后项与比值的和是125，比值是5，前项是多少．
<gadget id="calculator">125 - 5</gadget>
<output>120</output>

<gadget id="calculator">1 + 5</gadget>
<output>6</output>

<gadget id="calculator">120 / 6</gadget>
<output>20</output>

<gadget id="calculator">20 * 5</gadget>
<output>100</output>

<result>100</result>