5 times x minus 37.5 equals 100. (solution by equation)
x的5倍减去37.5等于100．(用方程解)
<gadget id="calculator">100 + 37.5</gadget>
<output>137.5</output>

<gadget id="calculator">137.5 / 5</gadget>
<output>27.5</output>

<result>27.5</result>