We're dividing 76770834 by 645 
We want to divide 76770834 by 645.

Going ahead to step 1:
The number 645 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (6) from the dividend after 7, then repeat: 76 / 645

Step 2:
645 goes into 76 0 times with a remainder of 76.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 76, we end up with 76.
Fetch the next digit (7) from the dividend, attach it to 76 and continue: 767 / 645

Step 3:
645 goes into 767 1 times with a remainder of 122.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 645 from 767 and we're left with 122.
Append the next digit (7) from the dividend to 122 and continue with: 1227 / 645

On to step 4:
645 can be fit into 1227 1 times, resulting in a remainder of 582.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we subtract 645 from 1227, we get 582.
Fetch the next digit (0) from the dividend, attach it to 582 and continue: 5820 / 645

Step 5:
645 can be fit into 5820 9 times, resulting in a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 119.0
Deduct 5805 from 5820 and we're left with 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 645

Going ahead to step 6:
158 divided by 645 is 0 with a remainder of 158.
Record the quotient 0 as the next digit in the result. 
Result so far: 1190.0
Subtracting 0 from 158 leaves us with 158.
Append the next digit (3) from the dividend to 158 and continue with: 1583 / 645

Let's proceed to step 7:
645 goes into 1583 2 times with a remainder of 293.
Put 2 as the next digit of the answer. 
Result so far: 11902.0
The remainder is 293 after subtracting 1290 from 1583.
Include the next digit (4) from the dividend after 293, then repeat: 2934 / 645

Step 8:
2934 divided by 645 is 4 with a remainder of 354.
The number 4 becomes the next digit in our result. 
Result so far: 119024.0
Subtract 2580 from 2934 to get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Let's proceed to step 9:
645 goes into 3540 5 times with a remainder of 315.
Put 5 as the next digit of the answer. 
Result so far: 119024.5
Subtract 3225 from 3540 to get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Advancing to step 10:
The number 645 fits into 3150 4 times, leaving a remainder of 570.
Use 4 as the next digit of our solution. 
Result so far: 119024.54
Subtract 2580 from 3150 to get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Advancing to step 11:
5700 divided by 645 is 8 with a remainder of 540.
Record the quotient 8 as the next digit in the result. 
Result so far: 119024.548
Deduct 5160 from 5700 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Going ahead to step 12:
645 can be fit into 5400 8 times, resulting in a remainder of 240.
The next digit of our result is 8. 
Result so far: 119024.5488
Deduct 5160 from 5400 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The quotient of the division is 119024.5488, and the remainder is 0.0024.