We look at the division of 40087991 by 891 
We want to figure out the number of times 40087991 can be divided by 891.

Let's proceed to step 1:
4 divided by 891 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 891

Let's proceed to step 2:
40 divided by 891 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Bring next digit (0) of the dividend behind the 40 and repeat the process: 400 / 891

Advancing to step 3:
891 can be fit into 400 0 times, resulting in a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 400, we end up with 400.
Grab the next digit (8) from the dividend, add it to 400, then carry on: 4008 / 891

Advancing to step 4:
The number 891 fits into 4008 4 times, leaving a remainder of 444.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 3564 from 4008, we get 444.
Grab the next digit (7) from the dividend, add it to 444, then carry on: 4447 / 891

Let's proceed to step 5:
891 goes into 4447 4 times with a remainder of 883.
The next digit of our result is 4. 
Result so far: 44.0
Subtracting 3564 from 4447 leaves us with 883.
Grab the next digit (9) from the dividend, add it to 883, then carry on: 8839 / 891

Going ahead to step 6:
The number 891 fits into 8839 9 times, leaving a remainder of 820.
Write down 9 as next digit of the result. 
Result so far: 449.0
Deduct 8019 from 8839 and we're left with 820.
Bring next digit (9) of the dividend behind the 820 and repeat the process: 8209 / 891

Step 7:
The number 891 fits into 8209 9 times, leaving a remainder of 190.
The next digit of our result is 9. 
Result so far: 4499.0
Deduct 8019 from 8209 and we're left with 190.
Grab the next digit (1) from the dividend, add it to 190, then carry on: 1901 / 891

Moving on to step 8:
The number 891 fits into 1901 2 times, leaving a remainder of 119.
The next digit of our result is 2. 
Result so far: 44992.0
Subtracting 1782 from 1901 leaves us with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

On to step 9:
891 can be fit into 1190 1 times, resulting in a remainder of 299.
Put 1 as the next digit of the answer. 
Result so far: 44992.1
If we take 891 away from 1190, we end up with 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Moving on to step 10:
When dividing 2990 by 891, we get 3 with a remainder of 317.
Put 3 as the next digit of the answer. 
Result so far: 44992.13
Subtract 2673 from 2990 to get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Let's proceed to step 11:
3170 divided by 891 is 3 with a remainder of 497.
Record the quotient 3 as the next digit in the result. 
Result so far: 44992.133
If we take 2673 away from 3170, we end up with 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

After the division, we end up with 44992.133 and a remainder of 0.0497.