We're dividing 37645288 by 991 
We want to figure out the number of times 37645288 can be divided by 991.

Moving on to step 1:
The number 991 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 991

On to step 2:
991 can be fit into 37 0 times, resulting in a remainder of 37.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 37 to get 37.
Bring next digit (6) of the dividend behind the 37 and repeat the process: 376 / 991

Moving on to step 3:
If we divide 376 by 991, we get 0 and a remainder of 376.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 376, we end up with 376.
Grab the next digit (4) from the dividend, add it to 376, then carry on: 3764 / 991

Let's proceed to step 4:
The number 991 fits into 3764 3 times, leaving a remainder of 791.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 2973 from 3764, we get 791.
Fetch the next digit (5) from the dividend, attach it to 791 and continue: 7915 / 991

Step 5:
If we divide 7915 by 991, we get 7 and a remainder of 978.
Use 7 as the next digit of our solution. 
Result so far: 37.0
If we subtract 6937 from 7915, we get 978.
Fetch the next digit (2) from the dividend, attach it to 978 and continue: 9782 / 991

On to step 6:
991 goes into 9782 9 times with a remainder of 863.
The number 9 becomes the next digit in our result. 
Result so far: 379.0
Subtracting 8919 from 9782 leaves us with 863.
Include the next digit (8) from the dividend after 863, then repeat: 8638 / 991

Let's proceed to step 7:
If we divide 8638 by 991, we get 8 and a remainder of 710.
Put 8 as the next digit of the answer. 
Result so far: 3798.0
Deduct 7928 from 8638 and we're left with 710.
Take the next digit (8) from the dividend and append it to 710, then repeat: 7108 / 991

Going ahead to step 8:
When dividing 7108 by 991, we get 7 with a remainder of 171.
Record the quotient 7 as the next digit in the result. 
Result so far: 37987.0
The remainder is 171 after subtracting 6937 from 7108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

On to step 9:
1710 divided by 991 is 1 with a remainder of 719.
Put 1 as the next digit of the answer. 
Result so far: 37987.1
The remainder is 719 after subtracting 991 from 1710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7190, and continue the process.

Let's proceed to step 10:
If we divide 7190 by 991, we get 7 and a remainder of 253.
The next digit of our result is 7. 
Result so far: 37987.17
If we subtract 6937 from 7190, we get 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Moving on to step 11:
991 goes into 2530 2 times with a remainder of 548.
Record the quotient 2 as the next digit in the result. 
Result so far: 37987.172
Subtracting 1982 from 2530 leaves us with 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Going ahead to step 12:
If we divide 5480 by 991, we get 5 and a remainder of 525.
Put 5 as the next digit of the answer. 
Result so far: 37987.1725
The remainder is 525 after subtracting 4955 from 5480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Advancing to step 13:
When dividing 5250 by 991, we get 5 with a remainder of 295.
Record the quotient 5 as the next digit in the result. 
Result so far: 37987.17255
If we subtract 4955 from 5250, we get 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

The final outcome is 37987.17255, with a leftover of 0.000295.