We divide 25261821 by 6
We want to divide 25261821 by 6.

On to step 1:
When dividing 2 by 6, we get 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 6

Advancing to step 2:
If we divide 25 by 6, we get 4 and a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 24 from 25, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 6

On to step 3:
If we divide 12 by 6, we get 2 and a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Subtracting 12 from 12 leaves us with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 6

Let's proceed to step 4:
6 divided by 6 is 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 421.0
The remainder is 0 after subtracting 6 from 6.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 6

Moving on to step 5:
6 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 4210.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 6

On to step 6:
6 goes into 18 3 times with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 42103.0
Deduct 18 from 18 and we're left with 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 6

Step 7:
6 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 421030.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 6

On to step 8:
If we divide 21 by 6, we get 3 and a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 4210303.0
Subtracting 18 from 21 leaves us with 3.
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 9:
30 divided by 6 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 4210303.5
Subtracting 30 from 30 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
The number 6 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4210303.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
6 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 4210303.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 4210303.5, with a leftover of 0.0.