642099 ÷ 89 
We want to figure out the number of times 642099 can be divided by 89.

On to step 1:
89 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 89

Advancing to step 2:
89 goes into 64 0 times with a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Grab the next digit (2) from the dividend, add it to 64, then carry on: 642 / 89

Going ahead to step 3:
When dividing 642 by 89, we get 7 with a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 623 from 642 and we're left with 19.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 89

Moving on to step 4:
89 can be fit into 190 2 times, resulting in a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 72.0
If we take 178 away from 190, we end up with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 89

Going ahead to step 5:
89 can be fit into 129 1 times, resulting in a remainder of 40.
Write down 1 as next digit of the result. 
Result so far: 721.0
Subtract 89 from 129 to get 40.
Grab the next digit (9) from the dividend, add it to 40, then carry on: 409 / 89

On to step 6:
The number 89 fits into 409 4 times, leaving a remainder of 53.
The next digit of our result is 4. 
Result so far: 7214.0
If we take 356 away from 409, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
When dividing 530 by 89, we get 5 with a remainder of 85.
Write down 5 as next digit of the result. 
Result so far: 7214.5
If we subtract 445 from 530, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 8:
89 can be fit into 850 9 times, resulting in a remainder of 49.
Use 9 as the next digit of our solution. 
Result so far: 7214.59
Subtracting 801 from 850 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 9:
89 goes into 490 5 times with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 7214.595
Subtracting 445 from 490 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 10:
If we divide 450 by 89, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 7214.5955
Subtracting 445 from 450 leaves us 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.

The final result is 7214.5955 with a remainder of 5e-05.