Make each of these numbers using only 4's, and the operations +, -, ÷ and ×. For detailed contest rules, see the "Fours" Contest Page
| 1621 =  | 
1622 =  | 
|---|---|
| 1623 =  | 
1624 =  | 
| 1625 =  | 
1626 =  | 
| 1627 =  | 
1628 =  | 
| 1629 =  | 
1630 =  | 
| 1631 =  | 
1632 =  | 
| 1633 =  | 
1634 =  | 
| 1635 =  | 
1636 =  | 
| 1637 =  | 
1638 =  | 
| 1639 =  | 
1640 =  | 
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