The first class of the fifth grade is used to decorate the classroom, 4 sheets of paper are used, 2.8 yuan each, and 2 bottles of glue are used, 1.4 yuan each. How much is the total class fee?
开学五年级一班布置教室，用去纸4张，每张2.8元，用去胶水两瓶，每瓶1.4元，一共用去班费多少？
<gadget id="calculator">2.8 * 4</gadget>
<output>11.2</output>

<gadget id="calculator">1.4 * 2</gadget>
<output>2.8</output>

<gadget id="calculator">11.2 + 2.8</gadget>
<output>14</output>

<result>14</result>