Xiaoming has 4.8 yuan, and after giving Xiaohua 0.4 yuan, it is 0.6 yuan more than Xiaohua. How much is Xiaohua's original income?
小明有4.8元，给小华0.4元后还比小华多0.6元，小华原来有多少元．
<gadget id="calculator">0.4 * 2</gadget>
<output>0.8</output>

<gadget id="calculator">4.8 - 0.8 - 0.6</gadget>
<output>3.4</output>

<result>3.4</result>