Hello there! :)
Answer:

*The answer must have A POSITIVE SIGN ONLY!*
Explanation:
Add by the numbers from left/right.
1771761+18171771=19943532
Order of operations
PEMDAS
Parenthesis
Exponents
Multiply
Divide
Add
Subtract
Left/Right.
Final answer is 19,943,532.
Hope this helps you!
Have a nice day! :)
-Charlie
Thanks!