Among the 45 students in Class 1, the number of people who can swim and ride a bicycle is investigated, and it is found that each student can be at least the same. The survey result is: there are (2/5) students who can do both, there are (4/9) students who can swim, and what percentage of the class can ride a bicycle?
在六1班的45个学生中，调查会游泳和会骑自行车的人数，发现每个学生至少会一样．调查结果是：有(2/5)的学生两样都会，有(4/9)的学生会游泳，会骑自行车的人数占全班人数的几分之几？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(4/9) - (2/5)</gadget>
<output>2/45 = around 0.044444</output>

<gadget id="calculator">1 - (2/45)</gadget>
<output>43/45 = around 0.955556</output>

<result>43/45 = around 0.955556</result>