The document contains a series of mathematical calculations involving addition, subtraction, multiplication and division. It includes adding 54.134 to 768.0077, subtracting 459.0937, multiplying 65.890 by 7.8, and multiplying 458.9 by 0.55, with final results including 602.99, 235.476, 513.802, 252.45.

1. 768.0077
+ 54.134
602.99
8.052
12.7
- 459.0937
235.476
65.890 x 7.8
458.9 x .55
4.75
789.2345