Dad drank (3/5) of a bottle of drink, and Xiao Ming drank the rest. How much of this bottle of drink did he drink?
一瓶饮料，爸爸喝了(3/5)，剩下的小明喝，他喝了这瓶饮料的多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>