Li Hua spent 0.7 yuan on pencils and 1.2 yuan on exercise books. How much did he spend in total?
李华买铅笔用去0.7元，买练习本用去1.2元，他一共用去多少元．
<gadget id="calculator">0.7 + 1.2</gadget>
<output>1.9</output>

<result>1.9</result>