The number of A is 4800, which is exactly 8 times of the number of B. What is the difference between the numbers of A and B?
甲数是4800，正好是乙数的8倍，甲、乙两数相差多少．
<gadget id="calculator">4_800 / 8</gadget>
<output>600</output>

<gadget id="calculator">4_800 - 600</gadget>
<output>4_200</output>

<result>4_200</result>