Let's divide 90114045 by 645
We're looking to find how many times 645 goes into 90114045.

On to step 1:
When dividing 9 by 645, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 645

On to step 2:
When dividing 90 by 645, we get 0 with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Include the next digit (1) from the dividend after 90, then repeat: 901 / 645

On to step 3:
When dividing 901 by 645, we get 1 with a remainder of 256.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 645 from 901 and we're left with 256.
Grab the next digit (1) from the dividend, add it to 256, then carry on: 2561 / 645

Let's proceed to step 4:
645 can be fit into 2561 3 times, resulting in a remainder of 626.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 1935 from 2561 to get 626.
Grab the next digit (4) from the dividend, add it to 626, then carry on: 6264 / 645

Moving on to step 5:
645 can be fit into 6264 9 times, resulting in a remainder of 459.
Use 9 as the next digit of our solution. 
Result so far: 139.0
If we subtract 5805 from 6264, we get 459.
Take the next digit (0) from the dividend and append it to 459, then repeat: 4590 / 645

Step 6:
If we divide 4590 by 645, we get 7 and a remainder of 75.
Write down 7 as next digit of the result. 
Result so far: 1397.0
If we take 4515 away from 4590, we end up with 75.
Grab the next digit (4) from the dividend, add it to 75, then carry on: 754 / 645

On to step 7:
The number 645 fits into 754 1 times, leaving a remainder of 109.
Write down 1 as next digit of the result. 
Result so far: 13971.0
Subtract 645 from 754 to get 109.
Include the next digit (5) from the dividend after 109, then repeat: 1095 / 645

Advancing to step 8:
When dividing 1095 by 645, we get 1 with a remainder of 450.
Write down 1 as next digit of the result. 
Result so far: 139711.0
If we subtract 645 from 1095, we get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Step 9:
The number 645 fits into 4500 6 times, leaving a remainder of 630.
The number 6 becomes the next digit in our result. 
Result so far: 139711.6
Subtracting 3870 from 4500 leaves us with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Moving on to step 10:
6300 divided by 645 is 9 with a remainder of 495.
Put 9 as the next digit of the answer. 
Result so far: 139711.69
Deduct 5805 from 6300 and we're left with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Going ahead to step 11:
645 goes into 4950 7 times with a remainder of 435.
The number 7 becomes the next digit in our result. 
Result so far: 139711.697
If we take 4515 away from 4950, we end up with 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Advancing to step 12:
The number 645 fits into 4350 6 times, leaving a remainder of 480.
The next digit of our result is 6. 
Result so far: 139711.6976
If we take 3870 away from 4350, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 13:
4800 divided by 645 is 7 with a remainder of 285.
Record the quotient 7 as the next digit in the result. 
Result so far: 139711.69767
Subtract 4515 from 4800 to get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Going ahead to step 14:
If we divide 2850 by 645, we get 4 and a remainder of 270.
Record the quotient 4 as the next digit in the result. 
Result so far: 139711.697674
Subtracting 2580 from 2850 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Going ahead to step 15:
When dividing 2700 by 645, we get 4 with a remainder of 120.
The next digit of our result is 4. 
Result so far: 139711.6976744
Deduct 2580 from 2700 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

The final result is 139711.6976744 with a remainder of 1.2e-06.