58485211 ÷ 840 
We want to figure out the number of times 58485211 can be divided by 840.

Moving on to step 1:
The number 840 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 840

Let's proceed to step 2:
840 goes into 58 0 times with a remainder of 58.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 58, we end up with 58.
Append the next digit (4) from the dividend to 58 and continue with: 584 / 840

Advancing to step 3:
If we divide 584 by 840, we get 0 and a remainder of 584.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 584 and we're left with 584.
Grab the next digit (8) from the dividend, add it to 584, then carry on: 5848 / 840

Let's proceed to step 4:
840 goes into 5848 6 times with a remainder of 808.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 5040 away from 5848, we end up with 808.
Take the next digit (5) from the dividend and append it to 808, then repeat: 8085 / 840

Moving on to step 5:
When dividing 8085 by 840, we get 9 with a remainder of 525.
The next digit of our result is 9. 
Result so far: 69.0
Deduct 7560 from 8085 and we're left with 525.
Grab the next digit (2) from the dividend, add it to 525, then carry on: 5252 / 840

Step 6:
The number 840 fits into 5252 6 times, leaving a remainder of 212.
The next digit of our result is 6. 
Result so far: 696.0
If we take 5040 away from 5252, we end up with 212.
Take the next digit (1) from the dividend and append it to 212, then repeat: 2121 / 840

Advancing to step 7:
840 goes into 2121 2 times with a remainder of 441.
Write down 2 as next digit of the result. 
Result so far: 6962.0
The remainder is 441 after subtracting 1680 from 2121.
Include the next digit (1) from the dividend after 441, then repeat: 4411 / 840

Moving on to step 8:
The number 840 fits into 4411 5 times, leaving a remainder of 211.
Put 5 as the next digit of the answer. 
Result so far: 69625.0
Subtract 4200 from 4411 to get 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Moving on to step 9:
The number 840 fits into 2110 2 times, leaving a remainder of 430.
The next digit of our result is 2. 
Result so far: 69625.2
If we subtract 1680 from 2110, we get 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Step 10:
4300 divided by 840 is 5 with a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 69625.25
The remainder is 100 after subtracting 4200 from 4300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 11:
840 goes into 1000 1 times with a remainder of 160.
Put 1 as the next digit of the answer. 
Result so far: 69625.251
Subtract 840 from 1000 to get 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 12:
840 goes into 1600 1 times with a remainder of 760.
Use 1 as the next digit of our solution. 
Result so far: 69625.2511
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.

The quotient of the division is 69625.2511, and the remainder is 0.0076.