It is known that A, B, and C are on the same straight line. There is a total of 398 kilometers from A to B to C, and 200 kilometers from B to C. How many kilometers are there between A and B?
已知甲、乙、丙三地在同一直线上，从甲地经过乙地到丙地共有398千米，从乙地到丙地有200千米，则甲乙两地相距多少千米．
<gadget id="calculator">398 - 200</gadget>
<output>198</output>

<result>198</result>