It took 4 minutes to saw a steel pipe into two sections, and it took a total of 28 minutes to see how many sections the steel pipe was sawed into.
把一根钢管锯成小段，锯成两段时花了4分钟，最后一共花了28分钟，这根钢管被锯成了多少段．
<gadget id="calculator">28 / 4</gadget>
<output>7</output>

<gadget id="calculator">7 + 1</gadget>
<output>8</output>

<result>8</result>