Xiaohong bought a pencil for 0.7 yuan and a knife for 1.2 yuan, how much did she spend in total?
小红买一枝铅笔花0.7元，一把小刀1.2元，一共花了多少元．
<gadget id="calculator">0.7 + 1.2</gadget>
<output>1.9</output>

<result>1.9</result>