There are 36 kilograms in a barrel of oil, how many kilograms are left after pouring out (3/4)?
一桶油有36千克，倒出(3/4)后，还剩多少千克？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">36 * (3/4)</gadget>
<output>27</output>

<gadget id="calculator">36 - 27</gadget>
<output>9</output>

<result>9</result>