Let's divide 89435091 by 139
We want to divide 89435091 by 139.

On to step 1:
The number 139 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 139

Going ahead to step 2:
139 can be fit into 89 0 times, resulting in a remainder of 89.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 89 leaves us with 89.
Include the next digit (4) from the dividend after 89, then repeat: 894 / 139

Moving on to step 3:
894 divided by 139 is 6 with a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 834 from 894 to get 60.
Include the next digit (3) from the dividend after 60, then repeat: 603 / 139

Moving on to step 4:
If we divide 603 by 139, we get 4 and a remainder of 47.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
The remainder is 47 after subtracting 556 from 603.
Include the next digit (5) from the dividend after 47, then repeat: 475 / 139

Going ahead to step 5:
If we divide 475 by 139, we get 3 and a remainder of 58.
Record the quotient 3 as the next digit in the result. 
Result so far: 643.0
If we subtract 417 from 475, we get 58.
Append the next digit (0) from the dividend to 58 and continue with: 580 / 139

Going ahead to step 6:
580 divided by 139 is 4 with a remainder of 24.
The next digit of our result is 4. 
Result so far: 6434.0
If we take 556 away from 580, we end up with 24.
Take the next digit (9) from the dividend and append it to 24, then repeat: 249 / 139

Advancing to step 7:
When dividing 249 by 139, we get 1 with a remainder of 110.
Put 1 as the next digit of the answer. 
Result so far: 64341.0
The remainder is 110 after subtracting 139 from 249.
Take the next digit (1) from the dividend and append it to 110, then repeat: 1101 / 139

Going ahead to step 8:
1101 divided by 139 is 7 with a remainder of 128.
Put 7 as the next digit of the answer. 
Result so far: 643417.0
If we subtract 973 from 1101, we get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 9:
139 can be fit into 1280 9 times, resulting in a remainder of 29.
The number 9 becomes the next digit in our result. 
Result so far: 643417.9
Subtract 1251 from 1280 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 10:
139 goes into 290 2 times with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 643417.92
If we subtract 278 from 290, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 11:
The number 139 fits into 120 0 times, leaving a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 643417.92
Subtract 0 from 120 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 12:
1200 divided by 139 is 8 with a remainder of 88.
Put 8 as the next digit of the answer. 
Result so far: 643417.9208
Deduct 1112 from 1200 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Going ahead to step 13:
If we divide 880 by 139, we get 6 and a remainder of 46.
Use 6 as the next digit of our solution. 
Result so far: 643417.92086
If we subtract 834 from 880, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 14:
139 goes into 460 3 times with a remainder of 43.
The number 3 becomes the next digit in our result. 
Result so far: 643417.920863
Subtract 417 from 460 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 15:
430 divided by 139 is 3 with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 643417.9208633
Subtract 417 from 430 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

After the division, we end up with 643417.9208633 and a remainder of 1.3e-07.