98691012 ÷ 642 
Our goal is to divide 98691012 by 642.

Step 1:
If we divide 9 by 642, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 642

Going ahead to step 2:
642 goes into 98 0 times with a remainder of 98.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 98 after subtracting 0 from 98.
Take the next digit (6) from the dividend and append it to 98, then repeat: 986 / 642

On to step 3:
The number 642 fits into 986 1 times, leaving a remainder of 344.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 642 away from 986, we end up with 344.
Include the next digit (9) from the dividend after 344, then repeat: 3449 / 642

On to step 4:
642 goes into 3449 5 times with a remainder of 239.
Write down 5 as next digit of the result. 
Result so far: 15.0
Deduct 3210 from 3449 and we're left with 239.
Grab the next digit (1) from the dividend, add it to 239, then carry on: 2391 / 642

Moving on to step 5:
When dividing 2391 by 642, we get 3 with a remainder of 465.
The number 3 becomes the next digit in our result. 
Result so far: 153.0
If we subtract 1926 from 2391, we get 465.
Bring next digit (0) of the dividend behind the 465 and repeat the process: 4650 / 642

Step 6:
642 goes into 4650 7 times with a remainder of 156.
The next digit of our result is 7. 
Result so far: 1537.0
The remainder is 156 after subtracting 4494 from 4650.
Grab the next digit (1) from the dividend, add it to 156, then carry on: 1561 / 642

On to step 7:
When dividing 1561 by 642, we get 2 with a remainder of 277.
Write down 2 as next digit of the result. 
Result so far: 15372.0
If we take 1284 away from 1561, we end up with 277.
Grab the next digit (2) from the dividend, add it to 277, then carry on: 2772 / 642

On to step 8:
2772 divided by 642 is 4 with a remainder of 204.
Write down 4 as next digit of the result. 
Result so far: 153724.0
Deduct 2568 from 2772 and we're left with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Let's proceed to step 9:
642 goes into 2040 3 times with a remainder of 114.
Write down 3 as next digit of the result. 
Result so far: 153724.3
Deduct 1926 from 2040 and we're left with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Advancing to step 10:
1140 divided by 642 is 1 with a remainder of 498.
The number 1 becomes the next digit in our result. 
Result so far: 153724.31
If we take 642 away from 1140, we end up with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Let's proceed to step 11:
642 can be fit into 4980 7 times, resulting in a remainder of 486.
Record the quotient 7 as the next digit in the result. 
Result so far: 153724.317
The remainder is 486 after subtracting 4494 from 4980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Let's proceed to step 12:
642 can be fit into 4860 7 times, resulting in a remainder of 366.
Use 7 as the next digit of our solution. 
Result so far: 153724.3177
If we take 4494 away from 4860, we end up with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

The quotient of the division is 153724.3177, and the remainder is 0.00366.