Gerald works at a daycare that pays him $30 every day. He worked for an entire week and spent a total of $100. How much does he have left?
He earns $30 daily for a week (7 days) for a total earnings of $30*7 = $
<gadget id="calculator">30*7</gadget>
<output>210</output>
210.
He spent $100 leaving him with $210-$100 = $110.

<result>110</result>