It takes 7 minutes to cut a stick into 5 pieces, how long does it take in total?
把一根木棍锯成5段，每锯断一次要花7分钟，一共需要花多少时间？
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">4 * 7</gadget>
<output>28</output>

<result>28</result>