There is a 6-story commercial house in Ping'an Community, with 4 households on each floor. A total of 144 electric lights are installed in these living rooms. How many electric lights are there on average in each household?
平安小区有一幢6层的商品房，每层4户．在这些居室里一共装了144盏电灯，平均每户有多少盏电灯？
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">144 / 24</gadget>
<output>6</output>

<result>6</result>