There are 100m cloth, after making 20 sets of adult clothing of the same specification, it happens to make 30 sets of children's clothing of another specification. If the cloth for adult clothing is 2.6m per set, how much is the cloth for each set of children's clothing?
有100m布，做同样规格的成人服装20套后，又刚好做另一种规格的儿童服装30套．如果成人服装每套用布2.6m，那么儿童服装每套用布多少米？
<gadget id="calculator">2.6 * 20</gadget>
<output>52</output>

<gadget id="calculator">100 - 52</gadget>
<output>48</output>

<gadget id="calculator">48 / 30</gadget>
<output>8/5 = around 1.6</output>

<result>8/5 = around 1.6</result>