Xiaojun drank half of a bottle of mineral water, and there was 140 milliliters left. How many milliliters was there in this bottle of mineral water?
一瓶矿泉水小军喝了一半后，还剩140毫升，这瓶矿泉水原来有多少毫升．
<gadget id="calculator">140 * 2</gadget>
<output>280</output>

<result>280</result>