42146121 ÷ 206 
We want to divide 42146121 by 206.

Let's proceed to step 1:
When dividing 4 by 206, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 206

Step 2:
The number 206 fits into 42 0 times, leaving a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 206

Advancing to step 3:
The number 206 fits into 421 2 times, leaving a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 412 from 421, we get 9.
Fetch the next digit (4) from the dividend, attach it to 9 and continue: 94 / 206

Step 4:
206 goes into 94 0 times with a remainder of 94.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Deduct 0 from 94 and we're left with 94.
Grab the next digit (6) from the dividend, add it to 94, then carry on: 946 / 206

Going ahead to step 5:
When dividing 946 by 206, we get 4 with a remainder of 122.
Put 4 as the next digit of the answer. 
Result so far: 204.0
If we subtract 824 from 946, we get 122.
Append the next digit (1) from the dividend to 122 and continue with: 1221 / 206

Step 6:
When dividing 1221 by 206, we get 5 with a remainder of 191.
Put 5 as the next digit of the answer. 
Result so far: 2045.0
If we take 1030 away from 1221, we end up with 191.
Append the next digit (2) from the dividend to 191 and continue with: 1912 / 206

Moving on to step 7:
When dividing 1912 by 206, we get 9 with a remainder of 58.
The next digit of our result is 9. 
Result so far: 20459.0
If we take 1854 away from 1912, we end up with 58.
Append the next digit (1) from the dividend to 58 and continue with: 581 / 206

Let's proceed to step 8:
When dividing 581 by 206, we get 2 with a remainder of 169.
Use 2 as the next digit of our solution. 
Result so far: 204592.0
Subtracting 412 from 581 leaves us with 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

On to step 9:
The number 206 fits into 1690 8 times, leaving a remainder of 42.
The next digit of our result is 8. 
Result so far: 204592.8
Subtract 1648 from 1690 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 10:
420 divided by 206 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 204592.82
If we subtract 412 from 420, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 11:
When dividing 80 by 206, we get 0 with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 204592.82
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 12:
206 can be fit into 800 3 times, resulting in a remainder of 182.
Record the quotient 3 as the next digit in the result. 
Result so far: 204592.8203
Subtract 618 from 800 to get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Moving on to step 13:
The number 206 fits into 1820 8 times, leaving a remainder of 172.
The next digit of our result is 8. 
Result so far: 204592.82038
If we take 1648 away from 1820, we end up with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Advancing to step 14:
206 goes into 1720 8 times with a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 204592.820388
Subtract 1648 from 1720 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

After the division, we end up with 204592.820388 and a remainder of 7.2e-06.