1) 82 - (89 - 34) 7 : 2 + 1
First, we need to calculate (89 - 34) which is 55.
Then, we calculate (55 7) which is 385.
Next, we divide 385 by 2 which is 192.5.
Finally, we subtract 192.5 from 82 and add 1, resulting in: 82 - 192.5 + 1 = -109.5

2) (78 - 75) - 1 + 65 + 1000
First, we calculate (78 - 75) which is 3.
Next, we add 3 to 65 which is 68.
Finally, we add 68 to 1000 and subtract 1, resulting in: 68 + 1000 - 1 = 1067.