216102 divided by 51 
We're looking to find how many times 51 goes into 216102.

Step 1:
51 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 51

Moving on to step 2:
21 divided by 51 is 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Append the next digit (6) from the dividend to 21 and continue with: 216 / 51

Moving on to step 3:
When dividing 216 by 51, we get 4 with a remainder of 12.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 204 from 216 leaves us with 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 51

Advancing to step 4:
If we divide 121 by 51, we get 2 and a remainder of 19.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Deduct 102 from 121 and we're left with 19.
Append the next digit (0) from the dividend to 19 and continue with: 190 / 51

On to step 5:
The number 51 fits into 190 3 times, leaving a remainder of 37.
Use 3 as the next digit of our solution. 
Result so far: 423.0
Deduct 153 from 190 and we're left with 37.
Bring next digit (2) of the dividend behind the 37 and repeat the process: 372 / 51

On to step 6:
51 can be fit into 372 7 times, resulting in a remainder of 15.
The next digit of our result is 7. 
Result so far: 4237.0
Subtract 357 from 372 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
When dividing 150 by 51, we get 2 with a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 4237.2
Subtracting 102 from 150 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 8:
If we divide 480 by 51, we get 9 and a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 4237.29
If we subtract 459 from 480, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 9:
When dividing 210 by 51, we get 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 4237.294
Deduct 204 from 210 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
60 divided by 51 is 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 4237.2941
Subtract 51 from 60 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 11:
The number 51 fits into 90 1 times, leaving a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 4237.29411
The remainder is 39 after subtracting 51 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

In conclusion, the division gives 4237.29411 with a balance of 3.9e-05.