The canteen shipped 10 bags of rice, each bag 100 kg, and 900 kg of flour. How much less flour was shipped than rice?
食堂运来大米10袋，每袋100千克，运来面粉900千克，运来的面粉比大米少多少千克？
<gadget id="calculator">10 * 100</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 900</gadget>
<output>100</output>

<result>100</result>