The cost of the two laptops is 2 x $600 = $<<2*600=1200>>1200.

The cost of the four smartphones is 4 x $400 = $<<4*400=1600>>1600.

Thus, the total cost of all the items is $1200 + $1600 = $<<1200+1600=2800>>2800.

Therefore, Celine gets a change of $3000 - $2800 = $<<3000-2800=200>>200.

# Answer

200
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A shop sells laptops at $600 each and a smartphone at $400.  Celine buys two laptops and four smartphones for her children. How much change does she get back if she has $3000?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
200
A shop sells laptops at $600 each and a smartphone at $400.  Celine buys two laptops and four smartphones for her children. How much change does she get back if she has $3000?
train