Tongtong's father has 6030 points in China Mobile. He first exchanged 1022 points for a mouse, then 3178 points for a little penguin schoolbag, and the remaining points can be exchanged for an umbrella. How many points do I need to redeem for an umbrella?
彤彤的爸爸在中国移动的积分为6030分，他先用1022分兑换一个鼠标，再用3178分兑换一个小企鹅书包，余下的积分刚好可以兑换一把雨伞．兑换一把雨伞需要多少积分？
<gadget id="calculator">6_030 - 1_022 - 3_178</gadget>
<output>1_830</output>

<result>1_830</result>