We divide 30391951 by 840
Our goal is to divide 30391951 by 840.

Moving on to step 1:
The number 840 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 840

On to step 2:
30 divided by 840 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Fetch the next digit (3) from the dividend, attach it to 30 and continue: 303 / 840

Going ahead to step 3:
If we divide 303 by 840, we get 0 and a remainder of 303.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 303 and we're left with 303.
Bring next digit (9) of the dividend behind the 303 and repeat the process: 3039 / 840

Going ahead to step 4:
3039 divided by 840 is 3 with a remainder of 519.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 2520 from 3039 and we're left with 519.
Grab the next digit (1) from the dividend, add it to 519, then carry on: 5191 / 840

Going ahead to step 5:
840 goes into 5191 6 times with a remainder of 151.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
Subtract 5040 from 5191 to get 151.
Append the next digit (9) from the dividend to 151 and continue with: 1519 / 840

Advancing to step 6:
840 can be fit into 1519 1 times, resulting in a remainder of 679.
Record the quotient 1 as the next digit in the result. 
Result so far: 361.0
The remainder is 679 after subtracting 840 from 1519.
Append the next digit (5) from the dividend to 679 and continue with: 6795 / 840

Step 7:
840 goes into 6795 8 times with a remainder of 75.
Put 8 as the next digit of the answer. 
Result so far: 3618.0
If we take 6720 away from 6795, we end up with 75.
Append the next digit (1) from the dividend to 75 and continue with: 751 / 840

Moving on to step 8:
When dividing 751 by 840, we get 0 with a remainder of 751.
Write down 0 as next digit of the result. 
Result so far: 36180.0
Subtracting 0 from 751 leaves us with 751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7510, and continue the process.

Advancing to step 9:
840 can be fit into 7510 8 times, resulting in a remainder of 790.
Write down 8 as next digit of the result. 
Result so far: 36180.8
Subtract 6720 from 7510 to get 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7900, and continue the process.

Moving on to step 10:
When dividing 7900 by 840, we get 9 with a remainder of 340.
Use 9 as the next digit of our solution. 
Result so far: 36180.89
Subtract 7560 from 7900 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

On to step 11:
The number 840 fits into 3400 4 times, leaving a remainder of 40.
The next digit of our result is 4. 
Result so far: 36180.894
The remainder is 40 after subtracting 3360 from 3400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 12:
When dividing 400 by 840, we get 0 with a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 36180.894
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 13:
840 can be fit into 4000 4 times, resulting in a remainder of 640.
Record the quotient 4 as the next digit in the result. 
Result so far: 36180.89404
Subtract 3360 from 4000 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 14:
840 can be fit into 6400 7 times, resulting in a remainder of 520.
The next digit of our result is 7. 
Result so far: 36180.894047
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.

Going ahead to step 15:
When dividing 5200 by 840, we get 6 with a remainder of 160.
The next digit of our result is 6. 
Result so far: 36180.8940476
If we take 5040 away from 5200, we end up 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.

Going ahead to step 16:
If we divide 1600 by 840, we get 1 and a remainder of 760.
The number 1 becomes the next digit in our result. 
Result so far: 36180.89404761
Subtract 840 from 1600 to get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

After the division, we end up with 36180.89404761 and a remainder of 7.6e-07.