In the 1-minute rope skipping competition, Xiaoqiang's average number of 2 jumps is 110, so that the average number of 3 jumps is 115, how many times should he jump for the third time?
在1分钟跳绳比赛中，小强2次跳的平均个数是110，要使3次跳的平均个数是115个，他第3次应跳多少个．
<gadget id="calculator">115 * 3</gadget>
<output>345</output>

<gadget id="calculator">110 * 2</gadget>
<output>220</output>

<gadget id="calculator">345 - 220</gadget>
<output>125</output>

<result>125</result>