840398 ÷ 74 
We want to figure out the number of times 840398 can be divided by 74.

On to step 1:
The number 74 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 74

On to step 2:
When dividing 84 by 74, we get 1 with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 10 after subtracting 74 from 84.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 74

On to step 3:
74 goes into 100 1 times with a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtracting 74 from 100 leaves us with 26.
Bring next digit (3) of the dividend behind the 26 and repeat the process: 263 / 74

Step 4:
74 goes into 263 3 times with a remainder of 41.
Use 3 as the next digit of our solution. 
Result so far: 113.0
Subtracting 222 from 263 leaves us with 41.
Grab the next digit (9) from the dividend, add it to 41, then carry on: 419 / 74

Advancing to step 5:
When dividing 419 by 74, we get 5 with a remainder of 49.
The number 5 becomes the next digit in our result. 
Result so far: 1135.0
The remainder is 49 after subtracting 370 from 419.
Take the next digit (8) from the dividend and append it to 49, then repeat: 498 / 74

On to step 6:
If we divide 498 by 74, we get 6 and a remainder of 54.
The number 6 becomes the next digit in our result. 
Result so far: 11356.0
Deduct 444 from 498 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 7:
74 can be fit into 540 7 times, resulting in a remainder of 22.
The next digit of our result is 7. 
Result so far: 11356.7
Subtracting 518 from 540 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 8:
220 divided by 74 is 2 with a remainder of 72.
Put 2 as the next digit of the answer. 
Result so far: 11356.72
If we take 148 away from 220, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 9:
74 can be fit into 720 9 times, resulting in a remainder of 54.
The number 9 becomes the next digit in our result. 
Result so far: 11356.729
If we take 666 away from 720, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 10:
The number 74 fits into 540 7 times, leaving a remainder of 22.
Put 7 as the next digit of the answer. 
Result so far: 11356.7297
Subtract 518 from 540 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 11:
The number 74 fits into 220 2 times, leaving a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 11356.72972
Subtracting 148 from 220 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 12:
720 divided by 74 is 9 with a remainder of 54.
Use 9 as the next digit of our solution. 
Result so far: 11356.729729
If we take 666 away from 720, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 13:
If we divide 540 by 74, we get 7 and a remainder of 22.
The next digit of our result is 7. 
Result so far: 11356.7297297
The remainder is 22 after subtracting 518 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 14:
The number 74 fits into 220 2 times, leaving a remainder of 72.
Write down 2 as next digit of the result. 
Result so far: 11356.72972972
Deduct 148 from 220 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

After the division, we end up with 11356.72972972 and a remainder of 7.2e-08.