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In the example in Segment 383, the parameter, element,
is assigned successively to 570, 720, 640, and
720 with the statement in the block evaluated each time:
| Iteration | Value of element | New value assigned to sum |
| 1 | 570 | 0 $+$ 570 $=$ 570 |
| 2 | 720 | 570 $+$ 720 $=$ 1290 |
| 3 | 640 | 1290 $+$ 640 $=$ 1930 |
| 4 | 720 | 570 $+$ 720 $=$ 2650 |