It is hoped that the primary school computer room will be equipped with 25 student computers, each at 690 yuan, and the superior will allocate 15,000 yuan. How much is the difference?
希望小学计算机房要配置25台学生电脑，每台690元，上级拨款15000元，还差多少元？
<gadget id="calculator">690 * 25</gadget>
<output>17_250</output>

<gadget id="calculator">17_250 - 15_000</gadget>
<output>2_250</output>

<result>2_250</result>