Let's divide 98521421 by 786
Our goal is to divide 98521421 by 786.

Going ahead to step 1:
786 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 786

On to step 2:
98 divided by 786 is 0 with a remainder of 98.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 98, we end up with 98.
Bring next digit (5) of the dividend behind the 98 and repeat the process: 985 / 786

Step 3:
786 goes into 985 1 times with a remainder of 199.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 199 after subtracting 786 from 985.
Include the next digit (2) from the dividend after 199, then repeat: 1992 / 786

Let's proceed to step 4:
If we divide 1992 by 786, we get 2 and a remainder of 420.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we take 1572 away from 1992, we end up with 420.
Fetch the next digit (1) from the dividend, attach it to 420 and continue: 4201 / 786

Advancing to step 5:
If we divide 4201 by 786, we get 5 and a remainder of 271.
Write down 5 as next digit of the result. 
Result so far: 125.0
Deduct 3930 from 4201 and we're left with 271.
Include the next digit (4) from the dividend after 271, then repeat: 2714 / 786

Advancing to step 6:
If we divide 2714 by 786, we get 3 and a remainder of 356.
Write down 3 as next digit of the result. 
Result so far: 1253.0
If we take 2358 away from 2714, we end up with 356.
Include the next digit (2) from the dividend after 356, then repeat: 3562 / 786

Going ahead to step 7:
3562 divided by 786 is 4 with a remainder of 418.
Put 4 as the next digit of the answer. 
Result so far: 12534.0
Subtract 3144 from 3562 to get 418.
Include the next digit (1) from the dividend after 418, then repeat: 4181 / 786

Moving on to step 8:
786 goes into 4181 5 times with a remainder of 251.
Write down 5 as next digit of the result. 
Result so far: 125345.0
The remainder is 251 after subtracting 3930 from 4181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Going ahead to step 9:
If we divide 2510 by 786, we get 3 and a remainder of 152.
Put 3 as the next digit of the answer. 
Result so far: 125345.3
Subtract 2358 from 2510 to get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

On to step 10:
1520 divided by 786 is 1 with a remainder of 734.
Record the quotient 1 as the next digit in the result. 
Result so far: 125345.31
If we subtract 786 from 1520, we get 734.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7340, and continue the process.

Let's proceed to step 11:
If we divide 7340 by 786, we get 9 and a remainder of 266.
The next digit of our result is 9. 
Result so far: 125345.319
If we subtract 7074 from 7340, we get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Moving on to step 12:
786 goes into 2660 3 times with a remainder of 302.
The next digit of our result is 3. 
Result so far: 125345.3193
The remainder is 302 after subtracting 2358 from 2660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Moving on to step 13:
The number 786 fits into 3020 3 times, leaving a remainder of 662.
Record the quotient 3 as the next digit in the result. 
Result so far: 125345.31933
Deduct 2358 from 3020 and we're left with 662.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6620, and continue the process.

The final result is 125345.31933 with a remainder of 0.000662.