Among the four numbers 0.45, (5/9), 40% and 0.4, what is the largest number
在0.45、(5/9)、40%和0.4四个数中，最大的数是多少
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>