The distance between A and B is 6 kilometers. If you can get there by bicycle in 20 minutes, if walking is 200 meters less per minute than cycling, how many minutes will it take to walk from A to B?
甲乙两地相距6千米，如果骑自行车20分钟可以到达，如果步行比骑自行车每分钟少行200米，那么从甲地到乙地步行需多少分钟？
<gadget id="calculator">1_000 / 20</gadget>
<output>50</output>

<gadget id="calculator">6 * 50</gadget>
<output>300</output>

<gadget id="calculator">300 - 200</gadget>
<output>100</output>

<gadget id="calculator">1_000 / 100</gadget>
<output>10</output>

<gadget id="calculator">6 * 10</gadget>
<output>60</output>

<result>60</result>