Use a rope to measure the water depth of the swimming pool. When the rope is folded in half, there is an excess of 60 cm. When the rope is folded in three, there is still a difference of 40 cm. How deep is the swimming pool in centimeters?
用绳子测游泳池水深，绳子两折时，多余60厘米，绳子三折时，还差40厘米．游泳池水深是多少厘米？
<gadget id="calculator">60 + 40</gadget>
<output>100</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">100 / (1/6)</gadget>
<output>600</output>

<gadget id="calculator">600 / 2</gadget>
<output>300</output>

<gadget id="calculator">300 - 60</gadget>
<output>240</output>

<result>240</result>