Let's divide 7800137 by 423
We want to figure out the number of times 7800137 can be divided by 423.

Moving on to step 1:
The number 423 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 423

Going ahead to step 2:
78 divided by 423 is 0 with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Grab the next digit (0) from the dividend, add it to 78, then carry on: 780 / 423

On to step 3:
780 divided by 423 is 1 with a remainder of 357.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 423 from 780 to get 357.
Bring next digit (0) of the dividend behind the 357 and repeat the process: 3570 / 423

Moving on to step 4:
423 can be fit into 3570 8 times, resulting in a remainder of 186.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
Deduct 3384 from 3570 and we're left with 186.
Append the next digit (1) from the dividend to 186 and continue with: 1861 / 423

Advancing to step 5:
423 goes into 1861 4 times with a remainder of 169.
Put 4 as the next digit of the answer. 
Result so far: 184.0
Subtracting 1692 from 1861 leaves us with 169.
Grab the next digit (3) from the dividend, add it to 169, then carry on: 1693 / 423

Step 6:
1693 divided by 423 is 4 with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 1844.0
If we subtract 1692 from 1693, we get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 423

Advancing to step 7:
When dividing 17 by 423, we get 0 with a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 18440.0
Deduct 0 from 17 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 8:
423 goes into 170 0 times with a remainder of 170.
Put 0 as the next digit of the answer. 
Result so far: 18440.0
The remainder is 170 after subtracting 0 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 9:
If we divide 1700 by 423, we get 4 and a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 18440.04
The remainder is 8 after subtracting 1692 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
The number 423 fits into 80 0 times, leaving a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 18440.04
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 11:
The number 423 fits into 800 1 times, leaving a remainder of 377.
The number 1 becomes the next digit in our result. 
Result so far: 18440.0401
The remainder is 377 after subtracting 423 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3770, and continue the process.

Moving on to step 12:
If we divide 3770 by 423, we get 8 and a remainder of 386.
Put 8 as the next digit of the answer. 
Result so far: 18440.04018
Subtracting 3384 from 3770 leaves us with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Step 13:
When dividing 3860 by 423, we get 9 with a remainder of 53.
Write down 9 as next digit of the result. 
Result so far: 18440.040189
The remainder is 53 after subtracting 3807 from 3860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 14:
423 goes into 530 1 times with a remainder of 107.
Write down 1 as next digit of the result. 
Result so far: 18440.0401891
If we subtract 423 from 530, we get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 15:
The number 423 fits into 1070 2 times, leaving a remainder of 224.
Record the quotient 2 as the next digit in the result. 
Result so far: 18440.04018912
If we take 846 away from 1070, we end up with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

The quotient of the division is 18440.04018912, and the remainder is 2.24e-07.