Teacher Wang buys desks and chairs. With the money he brings, he can buy 40 desks and 60 chairs. One table and one chair are a set. Then he can buy as many sets of desks and chairs as he can.
王老师买课桌椅，他带的钱只买课桌可买40张，只买椅子可买60把，一桌一椅为一套，那么他最多可买桌椅多少套．
<gadget id="calculator">1 / 40</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/40) + (1/60)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">1 / (1/24)</gadget>
<output>24</output>

<result>24</result>