Weld a cuboid iron frame with a 60 decimeter long iron wire. The height of the iron frame is 3 decimeters and the length is 5 decimeters. How many decimeters is its width?
用一根长60分米长的铁丝焊接一个长方体铁架，铁架的高是3分米，长是5分米，它的宽多少分米？
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">15 - 8</gadget>
<output>7</output>

<result>7</result>