<human>:  John decides to buy new phones for him, his 2 kids, and his wife. Each phone after the first 2 is half price. If the phone price is $600 how much did he pay for them all?
<bot>: How many phones did John buy? ** He bought 1+2+1=<<1+2+1=4>>4 phones
How much did the first 2 phones cost? ** 2 of the phones cost 600 so their cost is 2*600=$<<2*600=1200>>1200
How much did the other two phones cost? ** The other two phones cost 600/2=$<<600/2=300>>300
How much did the other two phones cost? ** So they cost 300*2=$<<300*2=600>>600
How much did John pay for all the phones? ** So the total cost is 1200+600=$<<1200+600=1800>>1800
#### 1800