Zhao, Qian, Sun, and Li each have a number of colored balls, Zhao and Qian have 34 in total, Qian and Sun have 36 in total, Sun and Li have 40 in total, and Zhao and Li have colored balls in total how many?
赵、钱、孙、李4人各有彩球若干，赵、钱两人共有34个，钱、孙两人共有36个，孙、李两人共有40个，赵、李两人共有彩球多少个？
<gadget id="calculator">40 - 36</gadget>
<output>4</output>

<gadget id="calculator">34 + 4</gadget>
<output>38</output>

<result>38</result>