The Xiangyang transportation team originally planned to transport 10,200 tons of fertilizer in 15 days, but actually transported 170 tons more than the original plan every day. How many days will it actually take?
向阳运输队原计划15天运肥料10200吨，实际每天比原计划多运170吨，实际运要多少天？
<gadget id="calculator">10_200 / 15</gadget>
<output>680</output>

<gadget id="calculator">680 + 170</gadget>
<output>850</output>

<gadget id="calculator">10_200 / 850</gadget>
<output>12</output>

<result>12</result>