Lele bought 4 exercise books and 4 manuscript papers at Hongbo Supermarket. Each exercise book was 0.78 yuan, and each manuscript paper was 2.2 yuan. How much did she spend in total?
乐乐在宏博超市买4本练习本和4本稿纸，每本练习本0.78元，每本稿纸2.2元，她一共花多少钱？
<gadget id="calculator">0.78 + 2.2</gadget>
<output>2.98</output>

<gadget id="calculator">2.98 * 4</gadget>
<output>11.92</output>

<result>11.92</result>