A pen is 4.8 yuan, and a diary is 2.6 yuan. The fifth grade students bought 82 such pens and 120 diaries to donate to the children in the disaster area. How much did they have to pay in total?
一枝钢笔4.8元，一本日记本2.6元，五年级同学在支援灾区中买了82枝这样的钢笔和120本日记本捐给灾区的儿童，他们共要付多少元？
<gadget id="calculator">4.8 * 82</gadget>
<output>393.6</output>

<gadget id="calculator">2.6 * 120</gadget>
<output>312</output>

<gadget id="calculator">393.6 + 312</gadget>
<output>705.6</output>

<result>705.6</result>