Master Wang and Master Li each have to make 360 parts, Master Wang makes 18 parts per hour, and Master Li makes 24 parts per hour. How many hours is Master Li faster than Master Wang?
王师傅和李师傅各自要做360个零件，王师傅每小时做18个，李师傅每小时做24个，李师傅比王师傅快几小时？
<gadget id="calculator">360 / 18</gadget>
<output>20</output>

<gadget id="calculator">360 / 24</gadget>
<output>15</output>

<gadget id="calculator">20 - 15</gadget>
<output>5</output>

<result>5</result>