The price of a schoolbag with a 20% discount is 120 yuan. If it is sold at a 25% discount, how much will it cost to buy this schoolbag?
某款书包八折优惠售价是120元，如果按七五折出售，买这款书包需要多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">120 / (4/5)</gadget>
<output>150</output>

<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">150 * (3/4)</gadget>
<output>225/2 = around 112.5</output>

<result>225/2 = around 112.5</result>