Mary has collected 5 * $600 = $<<5*600=3000>>3000
Scott therefore has $3000 / 3 = $<<3000/3=1000>>1000
All together, they have raised $3000 + $1000 + $600 = $<<3000+1000+600=4600>>4600
They have therefore exceeded their goal by $4600 - $4000 = $<<4600-4000=600>>600
#### 600