Let's divide 73400519 by 840
We want to divide 73400519 by 840.

Advancing to step 1:
When dividing 7 by 840, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 840

Advancing to step 2:
The number 840 fits into 73 0 times, leaving a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 73 leaves us with 73.
Append the next digit (4) from the dividend to 73 and continue with: 734 / 840

Step 3:
When dividing 734 by 840, we get 0 with a remainder of 734.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 734 leaves us with 734.
Include the next digit (0) from the dividend after 734, then repeat: 7340 / 840

Step 4:
7340 divided by 840 is 8 with a remainder of 620.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 6720 from 7340 leaves us with 620.
Bring next digit (0) of the dividend behind the 620 and repeat the process: 6200 / 840

Let's proceed to step 5:
When dividing 6200 by 840, we get 7 with a remainder of 320.
Write down 7 as next digit of the result. 
Result so far: 87.0
If we take 5880 away from 6200, we end up with 320.
Fetch the next digit (5) from the dividend, attach it to 320 and continue: 3205 / 840

Going ahead to step 6:
840 goes into 3205 3 times with a remainder of 685.
The number 3 becomes the next digit in our result. 
Result so far: 873.0
Subtract 2520 from 3205 to get 685.
Bring next digit (1) of the dividend behind the 685 and repeat the process: 6851 / 840

On to step 7:
840 goes into 6851 8 times with a remainder of 131.
Write down 8 as next digit of the result. 
Result so far: 8738.0
Subtract 6720 from 6851 to get 131.
Fetch the next digit (9) from the dividend, attach it to 131 and continue: 1319 / 840

On to step 8:
The number 840 fits into 1319 1 times, leaving a remainder of 479.
The next digit of our result is 1. 
Result so far: 87381.0
Deduct 840 from 1319 and we're left with 479.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Advancing to step 9:
840 can be fit into 4790 5 times, resulting in a remainder of 590.
The number 5 becomes the next digit in our result. 
Result so far: 87381.5
If we take 4200 away from 4790, we end up with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Moving on to step 10:
5900 divided by 840 is 7 with a remainder of 20.
Put 7 as the next digit of the answer. 
Result so far: 87381.57
Subtracting 5880 from 5900 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
The number 840 fits into 200 0 times, leaving a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 87381.57
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 12:
When dividing 2000 by 840, we get 2 with a remainder of 320.
Record the quotient 2 as the next digit in the result. 
Result so far: 87381.5702
If we take 1680 away from 2000, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 13:
When dividing 3200 by 840, we get 3 with a remainder of 680.
The number 3 becomes the next digit in our result. 
Result so far: 87381.57023
Deduct 2520 from 3200 and we're left with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Moving on to step 14:
840 can be fit into 6800 8 times, resulting in a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 87381.570238
Subtract 6720 from 6800 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 15:
If we divide 800 by 840, we get 0 and a remainder of 800.
Put 0 as the next digit of the answer. 
Result so far: 87381.570238
If we subtract 0 from 800, we get 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Going ahead to step 16:
840 goes into 8000 9 times with a remainder of 440.
Put 9 as the next digit of the answer. 
Result so far: 87381.57023809
If we take 7560 away from 8000, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

The final outcome is 87381.57023809, with a leftover of 4.4e-07.