12190201 divided by 210 
Our goal is to divide 12190201 by 210.

Moving on to step 1:
1 divided by 210 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 210

Advancing to step 2:
When dividing 12 by 210, we get 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 210

Step 3:
210 can be fit into 121 0 times, resulting in a remainder of 121.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 121 after subtracting 0 from 121.
Include the next digit (9) from the dividend after 121, then repeat: 1219 / 210

Step 4:
210 can be fit into 1219 5 times, resulting in a remainder of 169.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 169 after subtracting 1050 from 1219.
Bring next digit (0) of the dividend behind the 169 and repeat the process: 1690 / 210

Going ahead to step 5:
When dividing 1690 by 210, we get 8 with a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 58.0
Subtract 1680 from 1690 to get 10.
Take the next digit (2) from the dividend and append it to 10, then repeat: 102 / 210

On to step 6:
210 can be fit into 102 0 times, resulting in a remainder of 102.
Put 0 as the next digit of the answer. 
Result so far: 580.0
If we take 0 away from 102, we end up with 102.
Fetch the next digit (0) from the dividend, attach it to 102 and continue: 1020 / 210

Advancing to step 7:
When dividing 1020 by 210, we get 4 with a remainder of 180.
The number 4 becomes the next digit in our result. 
Result so far: 5804.0
Subtract 840 from 1020 to get 180.
Grab the next digit (1) from the dividend, add it to 180, then carry on: 1801 / 210

Going ahead to step 8:
The number 210 fits into 1801 8 times, leaving a remainder of 121.
Use 8 as the next digit of our solution. 
Result so far: 58048.0
Subtract 1680 from 1801 to get 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Step 9:
1210 divided by 210 is 5 with a remainder of 160.
Record the quotient 5 as the next digit in the result. 
Result so far: 58048.5
If we subtract 1050 from 1210, we 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 10:
210 can be fit into 1600 7 times, resulting in a remainder of 130.
Write down 7 as next digit of the result. 
Result so far: 58048.57
Subtract 1470 from 1600 to get 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 11:
If we divide 1300 by 210, we get 6 and a remainder of 40.
Write down 6 as next digit of the result. 
Result so far: 58048.576
The remainder is 40 after subtracting 1260 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 12:
210 goes into 400 1 times with a remainder of 190.
Put 1 as the next digit of the answer. 
Result so far: 58048.5761
Subtracting 210 from 400 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 13:
210 goes into 1900 9 times with a remainder of 10.
The next digit of our result is 9. 
Result so far: 58048.57619
Deduct 1890 from 1900 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 14:
210 goes into 100 0 times with a remainder of 100.
Put 0 as the next digit of the answer. 
Result so far: 58048.57619
If we subtract 0 from 100, we get 100.
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 15:
210 goes into 1000 4 times with a remainder of 160.
Use 4 as the next digit of our solution. 
Result so far: 58048.5761904
The remainder is 160 after subtracting 840 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 16:
210 can be fit into 1600 7 times, resulting in a remainder of 130.
Use 7 as the next digit of our solution. 
Result so far: 58048.57619047
Deduct 1470 from 1600 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.

The final outcome is 58048.57619047, with a leftover of 1.3e-07.