The fruit shop shipped 8 bags of watermelons, each bag weighing 109 kilograms, and how many kilograms are added is 1 ton.
水果店运来8袋西瓜，每袋重109千克，再添上多少千克就是1吨．
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">109 * 8</gadget>
<output>872</output>

<gadget id="calculator">1_000 - 872</gadget>
<output>128</output>

<result>128</result>