Subtract 300 from the product of 34 and 57, how much is left?
从34与57的积里减去300，还剩多少？
<gadget id="calculator">34 * 57</gadget>
<output>1_938</output>

<gadget id="calculator">1_938 - 300</gadget>
<output>1_638</output>

<result>1_638</result>