4

3

2

2

2

3

4

7

+

5

+

4

×

4

+

5

+

7

+

12

+

9

+

8

+

20

×

35

×

21

+

72

×

160

×

55

+

93

+

232

+

8800

×

325

+

9032

+

9357

+

Each circle may contain + or × operation, producing in the box below it either the sum or the product of the two boxes above it.

Different arrangements of operations produce different results in the bottom box, e.g. 9357 in the example above. Occasionally, different operators produce the same result.

Given the top row as shown, which bottom number can be produced by the greatest number of different arrangements of operators?