We look at the division of 84201974 by 686 
Our goal is to divide 84201974 by 686.

Moving on to step 1:
686 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 686

Let's proceed to step 2:
686 can be fit into 84 0 times, resulting in a remainder of 84.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 84, we end up with 84.
Include the next digit (2) from the dividend after 84, then repeat: 842 / 686

On to step 3:
When dividing 842 by 686, we get 1 with a remainder of 156.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 156 after subtracting 686 from 842.
Take the next digit (0) from the dividend and append it to 156, then repeat: 1560 / 686

Let's proceed to step 4:
When dividing 1560 by 686, we get 2 with a remainder of 188.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Deduct 1372 from 1560 and we're left with 188.
Bring next digit (1) of the dividend behind the 188 and repeat the process: 1881 / 686

Going ahead to step 5:
1881 divided by 686 is 2 with a remainder of 509.
Use 2 as the next digit of our solution. 
Result so far: 122.0
The remainder is 509 after subtracting 1372 from 1881.
Append the next digit (9) from the dividend to 509 and continue with: 5099 / 686

Advancing to step 6:
When dividing 5099 by 686, we get 7 with a remainder of 297.
Record the quotient 7 as the next digit in the result. 
Result so far: 1227.0
The remainder is 297 after subtracting 4802 from 5099.
Append the next digit (7) from the dividend to 297 and continue with: 2977 / 686

Step 7:
If we divide 2977 by 686, we get 4 and a remainder of 233.
Record the quotient 4 as the next digit in the result. 
Result so far: 12274.0
Subtract 2744 from 2977 to get 233.
Grab the next digit (4) from the dividend, add it to 233, then carry on: 2334 / 686

Let's proceed to step 8:
If we divide 2334 by 686, we get 3 and a remainder of 276.
The number 3 becomes the next digit in our result. 
Result so far: 122743.0
If we take 2058 away from 2334, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Advancing to step 9:
686 can be fit into 2760 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 122743.4
Subtracting 2744 from 2760 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 10:
686 can be fit into 160 0 times, resulting in a remainder of 160.
Record the quotient 0 as the next digit in the result. 
Result so far: 122743.4
If we subtract 0 from 160, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 11:
1600 divided by 686 is 2 with a remainder of 228.
Write down 2 as next digit of the result. 
Result so far: 122743.402
If we take 1372 away from 1600, we end up with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Advancing to step 12:
The number 686 fits into 2280 3 times, leaving a remainder of 222.
Write down 3 as next digit of the result. 
Result so far: 122743.4023
If we take 2058 away from 2280, we end up with 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Moving on to step 13:
When dividing 2220 by 686, we get 3 with a remainder of 162.
The number 3 becomes the next digit in our result. 
Result so far: 122743.40233
If we take 2058 away from 2220, we end up with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

After the division, we end up with 122743.40233 and a remainder of 0.000162.