What is the sum of the fractional unit of (4/5) and the decimal unit of 0.7.
(4/5)的分数单位与0.7的小数单位的和是多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) + 0.1</gadget>
<output>0.3</output>

<result>0.3</result>