A garment manufacturer produces 720 sets of suits, and 240 sets of children's wear are three times more than suits. How many sets of children's clothing are produced? (solution by equation)
某制衣生产西服720套，生产童装比西服3倍多240套．生产童装多少套？(用方程解)
<gadget id="calculator">720 * 3</gadget>
<output>2_160</output>

<gadget id="calculator">2_160 + 240</gadget>
<output>2_400</output>

<result>2_400</result>