There are 340 hats in the first box, and 60 hats in the second box. Take 7 hats from the first box and put them in the second box each time. After how many times you take the hats in the two boxes The numbers are equal.
第一只箱子里有340顶帽子，第二只箱子里有60顶帽子，每次从第一只箱子里取7顶帽子放入第二只箱子里，取多少次后两只箱子里的帽子数就相等．
<gadget id="calculator">340 - 60</gadget>
<output>280</output>

<gadget id="calculator">7 + 7</gadget>
<output>14</output>

<gadget id="calculator">280 / 14</gadget>
<output>20</output>

<result>20</result>