98485729 ÷ 840 
Our goal is to divide 98485729 by 840.

Let's proceed to step 1:
When dividing 9 by 840, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 840

Advancing to step 2:
If we divide 98 by 840, we get 0 and a remainder of 98.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 98, we end up with 98.
Bring next digit (4) of the dividend behind the 98 and repeat the process: 984 / 840

On to step 3:
840 goes into 984 1 times with a remainder of 144.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 840 from 984, we get 144.
Include the next digit (8) from the dividend after 144, then repeat: 1448 / 840

Step 4:
If we divide 1448 by 840, we get 1 and a remainder of 608.
Write down 1 as next digit of the result. 
Result so far: 11.0
The remainder is 608 after subtracting 840 from 1448.
Append the next digit (5) from the dividend to 608 and continue with: 6085 / 840

On to step 5:
840 can be fit into 6085 7 times, resulting in a remainder of 205.
The next digit of our result is 7. 
Result so far: 117.0
If we subtract 5880 from 6085, we get 205.
Append the next digit (7) from the dividend to 205 and continue with: 2057 / 840

Step 6:
840 can be fit into 2057 2 times, resulting in a remainder of 377.
Record the quotient 2 as the next digit in the result. 
Result so far: 1172.0
If we subtract 1680 from 2057, we get 377.
Include the next digit (2) from the dividend after 377, then repeat: 3772 / 840

On to step 7:
840 goes into 3772 4 times with a remainder of 412.
The number 4 becomes the next digit in our result. 
Result so far: 11724.0
Subtract 3360 from 3772 to get 412.
Fetch the next digit (9) from the dividend, attach it to 412 and continue: 4129 / 840

Going ahead to step 8:
The number 840 fits into 4129 4 times, leaving a remainder of 769.
The number 4 becomes the next digit in our result. 
Result so far: 117244.0
Subtract 3360 from 4129 to get 769.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7690, and continue the process.

Advancing to step 9:
7690 divided by 840 is 9 with a remainder of 130.
Write down 9 as next digit of the result. 
Result so far: 117244.9
Deduct 7560 from 7690 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 10:
1300 divided by 840 is 1 with a remainder of 460.
Use 1 as the next digit of our solution. 
Result so far: 117244.91
Subtracting 840 from 1300 leaves us with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Going ahead to step 11:
If we divide 4600 by 840, we get 5 and a remainder of 400.
Record the quotient 5 as the next digit in the result. 
Result so far: 117244.915
If we take 4200 away from 4600, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 12:
When dividing 4000 by 840, we get 4 with a remainder of 640.
The number 4 becomes the next digit in our result. 
Result so far: 117244.9154
The remainder is 640 after subtracting 3360 from 4000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Moving on to step 13:
The number 840 fits into 6400 7 times, leaving a remainder of 520.
Put 7 as the next digit of the answer. 
Result so far: 117244.91547
If we take 5880 away from 6400, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Moving on to step 14:
5200 divided by 840 is 6 with a remainder of 160.
Write down 6 as next digit of the result. 
Result so far: 117244.915476
Subtracting 5040 from 5200 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 15:
840 can be fit into 1600 1 times, resulting in a remainder of 760.
The next digit of our result is 1. 
Result so far: 117244.9154761
Subtracting 840 from 1600 leaves us with 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Step 16:
If we divide 7600 by 840, we get 9 and a remainder of 40.
Put 9 as the next digit of the answer. 
Result so far: 117244.91547619
Subtracting 7560 from 7600 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 117244.91547619, with a leftover of 4e-08.