John buys 3 t-shirts that cost $20 each.  He also buys $50 in pants.  How much does he spend?
He spends 20*3=$
<gadget id="calculator">20*3</gadget>
<output>60</output>
60 on t-shirts.
So he spends 60+50=$
<gadget id="calculator">60+50</gadget>
<output>110</output>
110 in total.

<result>110</result>