There are 3 liters of salad oil, how many milliliters are left after pouring half of it.
装有3升的色拉油，倒了一半后，还剩多少毫升．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 * 1_000 * (1/2)</gadget>
<output>1_500</output>

<result>1_500</result>