Aunt Chen brought 120 yuan to the supermarket to buy juice, 40 yuan per box of juice, if the price of each box is reduced by 10 yuan, how many boxes can Aunt Shen buy.
陈阿姨带了120元钱去超市买果汁，每箱果汁40元，如果每箱降价10元，沈阿姨可以多买多少箱．
<gadget id="calculator">40 - 10</gadget>
<output>30</output>

<gadget id="calculator">120 / 30</gadget>
<output>4</output>

<gadget id="calculator">120 / 40</gadget>
<output>3</output>

<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<result>1</result>