We're dividing 77436961 by 840 
We want to figure out the number of times 77436961 can be divided by 840.

Advancing to step 1:
When dividing 7 by 840, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 840

Moving on to step 2:
If we divide 77 by 840, we get 0 and a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Include the next digit (4) from the dividend after 77, then repeat: 774 / 840

On to step 3:
840 can be fit into 774 0 times, resulting in a remainder of 774.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 774, we end up with 774.
Bring next digit (3) of the dividend behind the 774 and repeat the process: 7743 / 840

Let's proceed to step 4:
If we divide 7743 by 840, we get 9 and a remainder of 183.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Deduct 7560 from 7743 and we're left with 183.
Fetch the next digit (6) from the dividend, attach it to 183 and continue: 1836 / 840

On to step 5:
If we divide 1836 by 840, we get 2 and a remainder of 156.
Write down 2 as next digit of the result. 
Result so far: 92.0
Subtract 1680 from 1836 to get 156.
Bring next digit (9) of the dividend behind the 156 and repeat the process: 1569 / 840

Moving on to step 6:
The number 840 fits into 1569 1 times, leaving a remainder of 729.
The next digit of our result is 1. 
Result so far: 921.0
If we take 840 away from 1569, we end up with 729.
Include the next digit (6) from the dividend after 729, then repeat: 7296 / 840

On to step 7:
840 goes into 7296 8 times with a remainder of 576.
Write down 8 as next digit of the result. 
Result so far: 9218.0
The remainder is 576 after subtracting 6720 from 7296.
Fetch the next digit (1) from the dividend, attach it to 576 and continue: 5761 / 840

Step 8:
If we divide 5761 by 840, we get 6 and a remainder of 721.
Record the quotient 6 as the next digit in the result. 
Result so far: 92186.0
Deduct 5040 from 5761 and we're left with 721.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7210, and continue the process.

Going ahead to step 9:
7210 divided by 840 is 8 with a remainder of 490.
Write down 8 as next digit of the result. 
Result so far: 92186.8
Subtract 6720 from 7210 to get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Advancing to step 10:
4900 divided by 840 is 5 with a remainder of 700.
Use 5 as the next digit of our solution. 
Result so far: 92186.85
If we take 4200 away from 4900, we end up with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Step 11:
7000 divided by 840 is 8 with a remainder of 280.
Record the quotient 8 as the next digit in the result. 
Result so far: 92186.858
Subtracting 6720 from 7000 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Going ahead to step 12:
2800 divided by 840 is 3 with a remainder of 280.
The number 3 becomes the next digit in our result. 
Result so far: 92186.8583
Subtract 2520 from 2800 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 13:
840 can be fit into 2800 3 times, resulting in a remainder of 280.
The number 3 becomes the next digit in our result. 
Result so far: 92186.85833
Subtracting 2520 from 2800 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

The final outcome is 92186.85833, with a leftover of 0.00028.