If each of us wastes 1mL of water every time we wash, then how much water is wasted in a year if each person washes twice a day with a population of 1.3 billion?
如果我们每人每次在洗漱时浪费1mL水，那么我国13亿人口计算，每人每天洗漱两次，一年浪费多少水？
<gadget id="calculator">0.000001 * 2 * 1_300_000_000 * 365</gadget>
<output>949_000</output>

<result>949_000</result>