We're dividing 91971690 by 144 
We want to figure out the number of times 91971690 can be divided by 144.

Moving on to step 1:
144 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 144

Moving on to step 2:
The number 144 fits into 91 0 times, leaving a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 91 to get 91.
Bring next digit (9) of the dividend behind the 91 and repeat the process: 919 / 144

Going ahead to step 3:
919 divided by 144 is 6 with a remainder of 55.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Deduct 864 from 919 and we're left with 55.
Fetch the next digit (7) from the dividend, attach it to 55 and continue: 557 / 144

Advancing to step 4:
144 goes into 557 3 times with a remainder of 125.
Record the quotient 3 as the next digit in the result. 
Result so far: 63.0
Subtracting 432 from 557 leaves us with 125.
Fetch the next digit (1) from the dividend, attach it to 125 and continue: 1251 / 144

On to step 5:
The number 144 fits into 1251 8 times, leaving a remainder of 99.
The number 8 becomes the next digit in our result. 
Result so far: 638.0
Deduct 1152 from 1251 and we're left with 99.
Take the next digit (6) from the dividend and append it to 99, then repeat: 996 / 144

Let's proceed to step 6:
144 goes into 996 6 times with a remainder of 132.
Write down 6 as next digit of the result. 
Result so far: 6386.0
Subtracting 864 from 996 leaves us with 132.
Take the next digit (9) from the dividend and append it to 132, then repeat: 1329 / 144

Advancing to step 7:
When dividing 1329 by 144, we get 9 with a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 63869.0
If we subtract 1296 from 1329, we get 33.
Append the next digit (0) from the dividend to 33 and continue with: 330 / 144

Advancing to step 8:
The number 144 fits into 330 2 times, leaving a remainder of 42.
Put 2 as the next digit of the answer. 
Result so far: 638692.0
If we take 288 away from 330, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 9:
144 can be fit into 420 2 times, resulting in a remainder of 132.
The number 2 becomes the next digit in our result. 
Result so far: 638692.2
The remainder is 132 after subtracting 288 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 10:
The number 144 fits into 1320 9 times, leaving a remainder of 24.
Put 9 as the next digit of the answer. 
Result so far: 638692.29
Subtract 1296 from 1320 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 11:
The number 144 fits into 240 1 times, leaving a remainder of 96.
Record the quotient 1 as the next digit in the result. 
Result so far: 638692.291
Deduct 144 from 240 and we're left 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.

Step 12:
The number 144 fits into 960 6 times, leaving a remainder of 96.
Record the quotient 6 as the next digit in the result. 
Result so far: 638692.2916
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.

Going ahead to step 13:
The number 144 fits into 960 6 times, leaving a remainder of 96.
The next digit of our result is 6. 
Result so far: 638692.29166
Subtracting 864 from 960 leaves us 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.

Our division results in 638692.29166 with a remaining 9.6e-05.