The typist has to type 1,620 characters. He has already typed 60 characters per minute for 8 minutes, and the rest needs to be typed in 12 minutes. How many characters per minute on average?
打字员要打1620个字，已经打了8分钟，每分钟打60个字，剩下的要在12分钟打完，平均每分钟要打多少个字？
<gadget id="calculator">60 * 8</gadget>
<output>480</output>

<gadget id="calculator">1_620 - 480</gadget>
<output>1_140</output>

<gadget id="calculator">1_140 / 12</gadget>
<output>95</output>

<result>95</result>