Xiaohua bought 4 matts and 4 copies of Xiaoshucao. It is known that each copy of matts is 0.35 yuan, and each copy of Xiaosuancao is 0.42 yuan. How much did Xiaohua share?
小华买田字格和小算草各4本，已知每本田字格0.35元，每本小算草0.42元，小华共用了多少钱？
<gadget id="calculator">0.35 * 4</gadget>
<output>1.4</output>

<gadget id="calculator">0.42 * 4</gadget>
<output>1.68</output>

<gadget id="calculator">1.4 + 1.68</gadget>
<output>3.08</output>

<result>3.08</result>