25% of a number equals 3.75, what is this number? (solution by equation)
一个数的25%等于3.75，这个数是多少？(用方程解)
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.75 / (1/4)</gadget>
<output>15</output>

<result>15</result>