Shanghai's "Oriental Pearl" TV Tower is 468 meters high, 3 meters higher than 31 times that of an ordinary residential building. How many meters tall is this ordinary residential building?
上海"东方明珠"电视塔高468米，比一座普通住宅楼的31倍多3米，这幢普通住宅楼高多少米？
<gadget id="calculator">468 - 3</gadget>
<output>465</output>

<gadget id="calculator">465 / 31</gadget>
<output>15</output>

<result>15</result>