There are a total of 400 households in Boiler Community, each building has 5 floors, and each floor has 8 households. How many houses are there in total?
锅炉小区一共有400户人家，每幢有5层，每层有8户，一共有多少幢房子？
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<gadget id="calculator">400 / 40</gadget>
<output>10</output>

<result>10</result>