During the party, the teacher bought prizes, 17.5 yuan for each pen, and bought 180 pens. How much did the teacher spend in total?
联欢会时，老师买奖品，钢笔每支17.5元，买了180支，老师一共花了多少钱？
<gadget id="calculator">17.5 * 180</gadget>
<output>3_150</output>

<result>3_150</result>