What is the number that is 30 less than 180 times 9?
比9的180倍少30的数是多少．
<gadget id="calculator">9 * 180</gadget>
<output>1_620</output>

<gadget id="calculator">1_620 - 30</gadget>
<output>1_590</output>

<result>1_590</result>