Uncle Zhang insists on physical exercise every day, running a total of 12600 meters 7 days a week. According to this calculation, how many days will it take for Uncle Zhang to run 28,800 meters? (calculate with a calculator)
张大爷每天坚持体育锻炼，一星期7天共跑步12600米．照这样计算，张大爷跑完28800米，一共要用多少天？(用计算器计算)
<gadget id="calculator">12_600 / 7</gadget>
<output>1_800</output>

<gadget id="calculator">28_800 / 1_800</gadget>
<output>16</output>

<result>16</result>