Xiaoya bought 4 mechanical pencils and 3 ballpoint pens at the supermarket and spent 36.9 yuan. Xiaoqiao also bought the same 3 mechanical pencils and 5 ballpoint pens and spent 48.3 yuan. Please calculate how much each mechanical pencil is Yuan.
小亚在超市买了4支活动铅笔和3支圆珠笔，用去36.9元，小巧也买同样的3支活动铅笔和5支圆珠笔，用去48.3元，请你算一算，每支活动铅笔多少元．
<gadget id="calculator">36.9 * 5</gadget>
<output>184.5</output>

<gadget id="calculator">48.3 * 3</gadget>
<output>144.9</output>

<gadget id="calculator">184.5 - 144.9</gadget>
<output>39.6</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">20 - 9</gadget>
<output>11</output>

<gadget id="calculator">39.6 / 11</gadget>
<output>3.6</output>

<result>3.6</result>