We divide 40151053 by 321
We want to figure out the number of times 40151053 can be divided by 321.

Going ahead to step 1:
321 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 321

Step 2:
If we divide 40 by 321, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Append the next digit (1) from the dividend to 40 and continue with: 401 / 321

Going ahead to step 3:
When dividing 401 by 321, we get 1 with a remainder of 80.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 321 from 401 to get 80.
Include the next digit (5) from the dividend after 80, then repeat: 805 / 321

Let's proceed to step 4:
321 can be fit into 805 2 times, resulting in a remainder of 163.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 642 away from 805, we end up with 163.
Include the next digit (1) from the dividend after 163, then repeat: 1631 / 321

Going ahead to step 5:
1631 divided by 321 is 5 with a remainder of 26.
Write down 5 as next digit of the result. 
Result so far: 125.0
If we take 1605 away from 1631, we end up with 26.
Grab the next digit (0) from the dividend, add it to 26, then carry on: 260 / 321

Going ahead to step 6:
321 goes into 260 0 times with a remainder of 260.
Use 0 as the next digit of our solution. 
Result so far: 1250.0
Deduct 0 from 260 and we're left with 260.
Take the next digit (5) from the dividend and append it to 260, then repeat: 2605 / 321

Step 7:
321 can be fit into 2605 8 times, resulting in a remainder of 37.
Record the quotient 8 as the next digit in the result. 
Result so far: 12508.0
Subtract 2568 from 2605 to get 37.
Append the next digit (3) from the dividend to 37 and continue with: 373 / 321

On to step 8:
321 goes into 373 1 times with a remainder of 52.
Put 1 as the next digit of the answer. 
Result so far: 125081.0
If we take 321 away from 373, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 9:
321 can be fit into 520 1 times, resulting in a remainder of 199.
Use 1 as the next digit of our solution. 
Result so far: 125081.1
If we subtract 321 from 520, we get 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Let's proceed to step 10:
321 goes into 1990 6 times with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 125081.16
If we subtract 1926 from 1990, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 11:
The number 321 fits into 640 1 times, leaving a remainder of 319.
The next digit of our result is 1. 
Result so far: 125081.161
The remainder is 319 after subtracting 321 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Going ahead to step 12:
3190 divided by 321 is 9 with a remainder of 301.
Write down 9 as next digit of the result. 
Result so far: 125081.1619
Subtracting 2889 from 3190 leaves us with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Step 13:
3010 divided by 321 is 9 with a remainder of 121.
Write down 9 as next digit of the result. 
Result so far: 125081.16199
If we subtract 2889 from 3010, we get 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

The quotient of the division is 125081.16199, and the remainder is 0.000121.