The length of the bamboo is about 4 cm per hour during the vigorous growth period, and the length of the bell-shaped fungus is about 25 cm per hour. If it is in the vigorous growth period, the bamboo is 32 cm high at the beginning, and the bell-shaped fungus is 0.5 cm high. The height can catch up with the bamboo?
竹子生长旺盛期每时约长4厘米，钟状菌生长旺盛期每时约长25厘米，如果在生长旺盛期，开始时竹子高32厘米，钟状菌高0.5厘米，多少小时后钟状菌的高度可赶上了竹子？
<gadget id="calculator">32 - 0.5</gadget>
<output>31.5</output>

<gadget id="calculator">25 - 4</gadget>
<output>21</output>

<gadget id="calculator">31.5 / 21</gadget>
<output>1.5</output>

<result>1.5</result>