Experimental Primary School purchased 12 slide projectors and 5 electric fans, and paid a total of 7650 yuan. The unit price of one electric fan is 186 yuan. How much is the unit price of the slide projector?
实验小学购买了12台幻灯机和5台电风扇，共付了7650元，一台电风扇的单价是186元，幻灯机的单价是多少元？
<gadget id="calculator">186 * 5</gadget>
<output>930</output>

<gadget id="calculator">7_650 - 930</gadget>
<output>6_720</output>

<gadget id="calculator">6_720 / 12</gadget>
<output>560</output>

<result>560</result>