A garment factory produces 2,600 sets of girls' and children's clothing in January, and 800 sets of boys' and children's clothing are 3 times less than girls' and children's clothing. How many sets of boys' and children's clothing are produced?
某服装厂一月份生产女童装2600套，生产的男童装比女童装的3倍少800套，生产男童装多少套？
<gadget id="calculator">2_600 * 3</gadget>
<output>7_800</output>

<gadget id="calculator">7_800 - 800</gadget>
<output>7_000</output>

<result>7_000</result>