69249063 ÷ 210 
Our goal is to divide 69249063 by 210.

Step 1:
210 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 210

Let's proceed to step 2:
69 divided by 210 is 0 with a remainder of 69.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 69 after subtracting 0 from 69.
Grab the next digit (2) from the dividend, add it to 69, then carry on: 692 / 210

Let's proceed to step 3:
210 can be fit into 692 3 times, resulting in a remainder of 62.
The next digit of our result is 3. 
Result so far: 3.0
If we take 630 away from 692, we end up with 62.
Bring next digit (4) of the dividend behind the 62 and repeat the process: 624 / 210

Step 4:
When dividing 624 by 210, we get 2 with a remainder of 204.
Put 2 as the next digit of the answer. 
Result so far: 32.0
Subtracting 420 from 624 leaves us with 204.
Append the next digit (9) from the dividend to 204 and continue with: 2049 / 210

On to step 5:
210 goes into 2049 9 times with a remainder of 159.
The next digit of our result is 9. 
Result so far: 329.0
The remainder is 159 after subtracting 1890 from 2049.
Fetch the next digit (0) from the dividend, attach it to 159 and continue: 1590 / 210

Going ahead to step 6:
210 goes into 1590 7 times with a remainder of 120.
Write down 7 as next digit of the result. 
Result so far: 3297.0
If we take 1470 away from 1590, we end up with 120.
Take the next digit (6) from the dividend and append it to 120, then repeat: 1206 / 210

Going ahead to step 7:
210 goes into 1206 5 times with a remainder of 156.
The number 5 becomes the next digit in our result. 
Result so far: 32975.0
Deduct 1050 from 1206 and we're left with 156.
Bring next digit (3) of the dividend behind the 156 and repeat the process: 1563 / 210

Let's proceed to step 8:
The number 210 fits into 1563 7 times, leaving a remainder of 93.
Put 7 as the next digit of the answer. 
Result so far: 329757.0
The remainder is 93 after subtracting 1470 from 1563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

On to step 9:
210 goes into 930 4 times with a remainder of 90.
Put 4 as the next digit of the answer. 
Result so far: 329757.4
Deduct 840 from 930 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 10:
900 divided by 210 is 4 with a remainder of 60.
Put 4 as the next digit of the answer. 
Result so far: 329757.44
Subtract 840 from 900 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The quotient of the division is 329757.44, and the remainder is 0.06.