Sun Hua bought a motorcycle worth 6,400 yuan. According to regulations, he has to pay a 10% vehicle purchase tax. How much did he spend on this motorcycle?
孙华买了一辆6400元的摩托车，按规定，买摩托车要缴纳10%的车辆购置税，他买这辆摩托车一共要花多少元？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">6_400 * (1/10)</gadget>
<output>640</output>

<gadget id="calculator">6_400 + 640</gadget>
<output>7_040</output>

<result>7_040</result>