Mom bought 3 toothbrushes and 4 towels. Each toothbrush is 2.3 yuan and each towel is 3.2 yuan. How much did you spend in total?
妈妈买了3把牙刷和4张毛巾，牙刷每把2.3元，毛巾每张3.2元，一共用了多少元？
<gadget id="calculator">3 * 2.3</gadget>
<output>6.9</output>

<gadget id="calculator">4 * 3.2</gadget>
<output>12.8</output>

<gadget id="calculator">6.9 + 12.8</gadget>
<output>19.7</output>

<result>19.7</result>