The speeds of A and B are 52 km/h and 40 km/h respectively. They start from A to B at the same time. At 6 o'clock after departure, A encounters an oncoming truck. 1 Car B also met this truck some time later. Find the speed of this truck.
甲、乙两车的速度分别为52千米/时和40千米/时，它们同时从甲地出发到乙地去，出发后6时，甲车遇到一辆迎面开来的卡车，1时后乙车也遇到了这辆卡车．求这辆卡车的速度．
<gadget id="calculator">52 * 6</gadget>
<output>312</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<gadget id="calculator">40 * 7</gadget>
<output>280</output>

<gadget id="calculator">312 - 280</gadget>
<output>32</output>

<gadget id="calculator">7 - 6</gadget>
<output>1</output>

<gadget id="calculator">32 / 1</gadget>
<output>32</output>

<result>32</result>