A barrel of gasoline weighs 50kg, and (3/4) was used first, and then (3/4)kg was used, how many kilograms were used in total?
一桶汽油重50kg，先用去了(3/4)，又用去了(3/4)kg，一共用去了多少千克？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">50 * (3/4)</gadget>
<output>75/2 = around 37.5</output>

<gadget id="calculator">(75/2) + (3/4)</gadget>
<output>153/4 = around 38.25</output>

<result>153/4 = around 38.25</result>