A bottle of milk is 250ml, how many bottles of this milk is exactly 2 liters.
一瓶牛奶250ml，多少瓶这样的牛奶正好是2升．
<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 / 250</gadget>
<output>8</output>

<result>8</result>