"It's a little bit of a small thing, and it's a big thing to save." If each person saves 10 grams of rice, 1.3 billion people in the country can save about how many tons of rice.
"点滴事小，节约事大"．如果每人节约10克米饭，全国13亿人就可以节约大约多少吨米饭．
<result>13_000</result>