A 7-story residential building is divided into 8 units, each unit houses 4 households on each floor. How many households can live in this building?
一栋7层的住宅楼，分为8个单元，每个单元每层住4户．这栋楼一共可以住多少户？
<gadget id="calculator">4 * 8 * 7</gadget>
<output>224</output>

<result>224</result>