There are two wooden strips with a length of 25 cm. They are fixed into a wooden strip with a length of 36 cm. They are nailed together in the middle. What is the length of the overlapping part?
有两根长都是25厘米的木条，定成一根长36厘米的木条，中间钉在一起，重叠部分长多少厘米．
<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">50 - 36</gadget>
<output>14</output>

<result>14</result>