He sells each computer for 1.4*800=$<<1.4*800=1120>>1120
That means he makes a profit of 1120-800=$<<1120-800=320>>320 per computer
So he makes 320*60=$<<320*60=19200>>19200 from selling computers
He has extra expenses of 5000+3000=$<<5000+3000=8000>>8000 a month
So his profit is 19200-8000=$<<19200-8000=11200>>11,200
#### 11200