Box A contains 124 table tennis balls and box B contains 20 table tennis balls. If you take out 13 ping-pong balls from box A and put them into box B each time, how many times do you need to take them to make the number of ping-pong balls in box A and box B the same?
A箱里有乒乓球124个，B箱里有乒乓球20个．如果每次从A箱里拿出13个乒乓球放入B箱里，要拿多少次才能使A箱和B箱里的乒乓球个数一样多？
<gadget id="calculator">124 - 20</gadget>
<output>104</output>

<gadget id="calculator">13 + 13</gadget>
<output>26</output>

<gadget id="calculator">104 / 26</gadget>
<output>4</output>

<result>4</result>