91721769 divided by 144 
We want to figure out the number of times 91721769 can be divided by 144.

Going ahead to step 1:
144 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 144

Step 2:
144 goes into 91 0 times with a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Grab the next digit (7) from the dividend, add it to 91, then carry on: 917 / 144

On to step 3:
The number 144 fits into 917 6 times, leaving a remainder of 53.
Put 6 as the next digit of the answer. 
Result so far: 6.0
The remainder is 53 after subtracting 864 from 917.
Grab the next digit (2) from the dividend, add it to 53, then carry on: 532 / 144

Let's proceed to step 4:
The number 144 fits into 532 3 times, leaving a remainder of 100.
Record the quotient 3 as the next digit in the result. 
Result so far: 63.0
Subtracting 432 from 532 leaves us with 100.
Bring next digit (1) of the dividend behind the 100 and repeat the process: 1001 / 144

Step 5:
144 goes into 1001 6 times with a remainder of 137.
Put 6 as the next digit of the answer. 
Result so far: 636.0
The remainder is 137 after subtracting 864 from 1001.
Append the next digit (7) from the dividend to 137 and continue with: 1377 / 144

Step 6:
The number 144 fits into 1377 9 times, leaving a remainder of 81.
Write down 9 as next digit of the result. 
Result so far: 6369.0
Subtracting 1296 from 1377 leaves us with 81.
Bring next digit (6) of the dividend behind the 81 and repeat the process: 816 / 144

Let's proceed to step 7:
144 goes into 816 5 times with a remainder of 96.
Put 5 as the next digit of the answer. 
Result so far: 63695.0
Subtract 720 from 816 to get 96.
Grab the next digit (9) from the dividend, add it to 96, then carry on: 969 / 144

On to step 8:
144 can be fit into 969 6 times, resulting in a remainder of 105.
Record the quotient 6 as the next digit in the result. 
Result so far: 636956.0
If we subtract 864 from 969, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Moving on to step 9:
The number 144 fits into 1050 7 times, leaving a remainder of 42.
Use 7 as the next digit of our solution. 
Result so far: 636956.7
If we subtract 1008 from 1050, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 10:
144 goes into 420 2 times with a remainder of 132.
Write down 2 as next digit of the result. 
Result so far: 636956.72
Deduct 288 from 420 and we're left with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Advancing to step 11:
The number 144 fits into 1320 9 times, leaving a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 636956.729
If we take 1296 away from 1320, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 12:
When dividing 240 by 144, we get 1 with a remainder of 96.
Use 1 as the next digit of our solution. 
Result so far: 636956.7291
If we take 144 away from 240, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 13:
144 goes into 960 6 times with a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 636956.72916
If we subtract 864 from 960, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 14:
144 goes into 960 6 times with a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 636956.729166
Subtract 864 from 960 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Our division results in 636956.729166 with a remaining 9.6e-06.