Xiao Wang and Xiao Li are walking towards each other from two places at the same time. It takes Xiao Wang 40 minutes to complete the journey, and Xiao Li takes 30 minutes to complete the journey. After 5 minutes of departure at the same time, Xiao Li returned to the starting point because he forgot to bring something, and because of There was a delay of 5 minutes in picking up the things. How long did it take for Xiao Li to meet before he set off again?
小王和小李同时从两地相对而行，小王走完全程需要40分钟，小李走完全程需要30分钟，两人同时出发5分钟后，小李因忘带东西返回出发点，又因取东西耽搁了5分钟，小李再出发多长时间后两人相遇？
<gadget id="calculator">1 / 40</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">(1/40) * 15</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/40) + (1/30)</gadget>
<output>7/120 = around 0.058333</output>

<gadget id="calculator">(5/8) / (7/120)</gadget>
<output>75/7 = around 10.714286</output>

<result>75/7 = around 10.714286</result>