Tiantian, Fangfang and Lili go to school from the same place, and the time spent on the Tiantian road is (4/9) hours. For example, if it takes (1/10) more hours, the time spent on Lili Road is more (1/5) hour than Fang Fang, how many hours did Lili use on the road?
田田、方方和丽丽三人从同一地点出发上学，田田路上用的时间是(4/9)小时．比方方多用(1/10)小时，丽丽路上所用的时间比方方多(1/5)小时，丽丽路上用了多少小时？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(4/9) - (1/10)</gadget>
<output>31/90 = around 0.344444</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(31/90) + (1/5)</gadget>
<output>49/90 = around 0.544444</output>

<result>49/90 = around 0.544444</result>