The current price of a commodity is 42 yuan, which is 12.5% lower than the original price. How much is the original price?
一件商品，现价42元，比原来降价12.5%，原来的售价是多少元？
<gadget id="calculator">12.5 / 100</gadget>
<output>0.125</output>

<gadget id="calculator">1 - 0.125</gadget>
<output>0.875</output>

<gadget id="calculator">42 / 0.875</gadget>
<output>48</output>

<result>48</result>