A math book is 4.85 yuan, and a pen is 5.15 yuan. In order to reward students who have made progress, it is necessary to purchase 6 math books and 6 pens. How much is the total cost?
一本数学书4.85元，一支钢笔5.15元．为奖励有进步的同学，需购买6本数学书和6支钢笔，一共需要多少钱？
<gadget id="calculator">4.85 * 6</gadget>
<output>29.1</output>

<gadget id="calculator">5.15 * 6</gadget>
<output>30.9</output>

<gadget id="calculator">29.1 + 30.9</gadget>
<output>60</output>

<result>60</result>