1000 grains of rice weigh 25 grams. According to this calculation, how many tons does 10 billion grains of rice weigh?
1000粒米重25克，照这样计算，100亿粒米重多少吨．
<gadget id="calculator">25 / 1_000</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">100_000_000 / 1_000_000</gadget>
<output>100</output>

<gadget id="calculator">(1/40) * 100 * 100</gadget>
<output>250</output>

<result>250</result>