The TV factory assembles 215 TVs on the first day, 108 TVs in the morning on the second day, and 136 TVs in the afternoon. How many more units were assembled on the second day than on the first day?
电视机厂第一天装配电视机215台，第二天上午装配108台，下午装配136台．第二天比第一天多装配多少台？
<gadget id="calculator">136 - 215</gadget>
<output>-79</output>

<gadget id="calculator">108 + (-79)</gadget>
<output>29</output>

<result>29</result>