Both Xiao Wang and Xiao Li are in place A and are going to place B. Xiao Wang travels 120 meters per minute, and Xiao Li travels 150 meters per minute. 5 minutes after Xiao Wang went first, Xiao Li started. After a few minutes, Xiao Li caught up with Xiao Wang?
小王和小李都在甲地，准备去乙地，小王每分钟行120米，小李每分钟行150米．小王先行5分钟后，小李才出发，经过几分钟后小李追上小王？
<gadget id="calculator">120 * 5</gadget>
<output>600</output>

<gadget id="calculator">150 - 120</gadget>
<output>30</output>

<gadget id="calculator">600 / 30</gadget>
<output>20</output>

<result>20</result>