Mr. Wang brought 300 yuan to refuel his car. Since the 92-grade gasoline dropped by 20% compared with the same period last year, the result was 9.5 liters more gasoline than before. It turned out that the amount of money Mr. Wang could add was how many liters of gasoline.
王老师带300元钱给自己的汽车加油，由于92号汽油比去年同期下跌20%，结果这些钱比原来多加9.5升汽油，原来这些钱王老师可以加汽油多少升．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">300 / (4/5)</gadget>
<output>375</output>

<gadget id="calculator">375 - 300</gadget>
<output>75</output>

<gadget id="calculator">75 / 9.5</gadget>
<output>7.894737</output>

<gadget id="calculator">300 / 7.894737</gadget>
<output>37.999999</output>

<result>37.999999</result>