There are a bunch of screws and nuts. If 1 screw is paired with 2 nuts, there will be 10 more nuts; if 1 screw is paired with 3 nuts, there will be 6 nuts less. How many nuts are there.
有一堆螺丝和螺母，若1个螺丝配2个螺母，则多10个螺母；若1个螺丝配3个螺母则少6个螺母．螺母有多少个．
<gadget id="calculator">10 + 6</gadget>
<output>16</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">16 / 1</gadget>
<output>16</output>

<gadget id="calculator">2 * 16</gadget>
<output>32</output>

<gadget id="calculator">32 + 10</gadget>
<output>42</output>

<result>42</result>