The school bought 13 boxes of white chalk and 10 boxes of colored chalk, paying a total of 64.5 yuan. 2.5 yuan per box of white chalk, how much is each box of colored chalk?
学校买了13盒白粉笔和10盒彩色粉笔，共付64.5元．每盒白粉笔2.5元，每盒彩色粉笔多少元？
<gadget id="calculator">2.5 * 13</gadget>
<output>32.5</output>

<gadget id="calculator">64.5 - 32.5</gadget>
<output>32</output>

<gadget id="calculator">32 / 10</gadget>
<output>16/5 = around 3.2</output>

<result>16/5 = around 3.2</result>