What is the difference between 900 minus 10 times the product of 18 and 5?
900减去18与5的积的10倍，差是多少？
<gadget id="calculator">18 * 5 * 10</gadget>
<output>900</output>

<gadget id="calculator">900 - 900</gadget>
<output>0</output>

<result>0</result>