Xiao Ming and Xiao Jun exercise in the morning. Xiao Ming runs 600 meters every day, and Xiao Jun runs 850 meters every day. Xiao Ming ran for 6 days this week, and Xiao Jun ran for 5 days. How many meters did Xiao Ming run less than Xiao Jun?
小明和小军早晨锻炼身体，小明每天跑600米，小军每天跑850米．这星期小明跑了6天，小军跑了5天．小明比小军少跑了多少米？
<gadget id="calculator">850 * 5</gadget>
<output>4_250</output>

<gadget id="calculator">600 * 6</gadget>
<output>3_600</output>

<gadget id="calculator">4_250 - 3_600</gadget>
<output>650</output>

<result>650</result>