Obviously I was going to type an 800-word composition, but I typed 150 words in the first 3 minutes. According to this calculation, how many minutes will it take to play the rest?
明明要打一篇800字的作文，前3分钟打了150字．照这样计算，余下的要打多少分钟？
<gadget id="calculator">800 - 150</gadget>
<output>650</output>

<gadget id="calculator">150 / 3</gadget>
<output>50</output>

<gadget id="calculator">650 / 50</gadget>
<output>13</output>

<result>13</result>