A piece of cloth is 135 meters long and can be used to make 54 sets of adult clothing. If it is changed to children's clothing, each set is 0.7 meters shorter than the adult clothing. How many sets of children's clothing can be made?
一块布长135米，可做大人服装54套，如果改做儿童服装则每套比大人服装少0.7米．可做儿童服装多少套？
<gadget id="calculator">135 / 54</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(5/2) - 0.7</gadget>
<output>1.8</output>

<gadget id="calculator">135 / 1.8</gadget>
<output>75</output>

<result>75</result>