Students line up to do exercises, Xiao Ming is in the middle of the line, and the distance between every two students is 50 cm. It is known that there are 5 people in front of Xiao Ming, how long is the line?
同学们排队做操，小明在队伍的正中间，每两个同学之间相距50厘米，已知小明前面有5人，问这条队伍长多少米．
<gadget id="calculator">1 - 1</gadget>
<output>0</output>

<gadget id="calculator">5 + 5 + 0</gadget>
<output>10</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">10 * (1/2)</gadget>
<output>5</output>

<result>5</result>