A pen weighs about 6 grams. According to this calculation, how many tons does a million pens weigh?
一枝钢笔约重6克．照这样计算，一百万枝钢笔约重多少吨．
<gadget id="calculator">1 * 1_000_000</gadget>
<output>1_000_000</output>

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

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<result>6</result>