Mom goes to the store to buy fabric, buys 2.25 meters, 28 yuan per meter of fabric, and pays the salesperson 100 yuan, how much should I get back?
妈妈去商店买布料，买了2.25米，每米布料28元，付给营业员100元，应找回多少钱？
<gadget id="calculator">2.25 * 28</gadget>
<output>63</output>

<gadget id="calculator">100 - 63</gadget>
<output>37</output>

<result>37</result>