We divide 86774321 by 7
We want to figure out the number of times 86774321 can be divided by 7.

Moving on to step 1:
8 divided by 7 is 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 7 from 8 to get 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 7

On to step 2:
When dividing 16 by 7, we get 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 2 after subtracting 14 from 16.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 7

Let's proceed to step 3:
7 goes into 27 3 times with a remainder of 6.
The next digit of our result is 3. 
Result so far: 123.0
If we subtract 21 from 27, we get 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 7

Moving on to step 4:
7 can be fit into 67 9 times, resulting in a remainder of 4.
The number 9 becomes the next digit in our result. 
Result so far: 1239.0
If we subtract 63 from 67, we get 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 7

Going ahead to step 5:
When dividing 44 by 7, we get 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 12396.0
If we subtract 42 from 44, we get 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 7

On to step 6:
23 divided by 7 is 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 123963.0
The remainder is 2 after subtracting 21 from 23.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 7

Advancing to step 7:
7 can be fit into 22 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 1239633.0
Subtract 21 from 22 to get 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 7

Going ahead to step 8:
When dividing 11 by 7, we get 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 12396331.0
If we subtract 7 from 11, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
7 goes into 40 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 12396331.5
Subtract 35 from 40 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
When dividing 50 by 7, we get 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 12396331.57
Subtract 49 from 50 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 11:
When dividing 10 by 7, we get 1 with a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 12396331.571
The remainder is 3 after subtracting 7 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 12:
30 divided by 7 is 4 with a remainder of 2.
The next digit of our result is 4. 
Result so far: 12396331.5714
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 13:
7 goes into 20 2 times with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 12396331.57142
The remainder is 6 after subtracting 14 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 14:
7 can be fit into 60 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 12396331.571428
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 15:
7 goes into 40 5 times with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 12396331.5714285
Deduct 35 from 40 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 16:
7 can be fit into 50 7 times, resulting in a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 12396331.57142857
If we subtract 49 from 50, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 12396331.57142857, and the remainder is 1e-09.