A set of children's clothing uses 1.8 meters of cloth, which is 0.7 meters less than a set of adult clothing. How many meters of cloth is used for a set of adult clothing? (Solve the equations and check)
一套儿童服装用布1.8米，比一套成人服装少用0.7米，一套成人服装用布多少米？(列方程解答并检验)
<gadget id="calculator">0.7 + 1.8</gadget>
<output>2.5</output>

<result>2.5</result>