car is driving at a speed of 150 kilometers per hour. There is a 12-meter-long truck driving beside it. The car can surpass the truck in 6 seconds. Ask the speed of the truck.
汽车以每小时150公里的速度行驶，旁边有一辆12米长的大货车在行驶，小汽车6秒可超过大货车，问大货车的速度．
<gadget id="calculator">6 * 150</gadget>
<output>900</output>

<gadget id="calculator">900 - 12</gadget>
<output>888</output>

<gadget id="calculator">888 / 6</gadget>
<output>148</output>

<result>148</result>