Grandma spent 3.45 yuan on vegetables, 9.3 yuan on fish, 2.55 yuan on bean products, and 20.7 yuan on meat. How much did grandma share?
奶奶买青菜用去3.45元，买鱼用去9.3元，买豆制品用去2.55元，买肉用去20.7元，奶奶共用了多少钱？
<gadget id="calculator">3.45 + 20.55</gadget>
<output>24</output>

<gadget id="calculator">9.3 + 20.7</gadget>
<output>30</output>

<gadget id="calculator">24 + 30</gadget>
<output>54</output>

<result>54</result>