A 16-storey residential building (floor height 3 meters) has a foundation depth of 8 meters. According to this ratio, how deep is the foundation needed to build a 22-storey residential building?
一座16层高的住宅楼(层高3米)，地基深为8米．按照这样的比例，盖一座22层高的住宅楼，需打多深的地基？
<gadget id="calculator">22 * 3 * 8</gadget>
<output>528</output>

<gadget id="calculator">16 * 3</gadget>
<output>48</output>

<gadget id="calculator">528 / 48</gadget>
<output>11</output>

<result>11</result>