3457 divided by 51 
Let's see how many times 51 fits into 3457.

Let's proceed to step 1:
51 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 51

On to step 2:
The number 51 fits into 34 0 times, leaving a remainder of 34.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 34, we get 34.
Bring next digit (5) of the dividend behind the 34 and repeat the process: 345 / 51

Moving on to step 3:
When dividing 345 by 51, we get 6 with a remainder of 39.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 306 from 345 and we're left with 39.
Append the next digit (7) from the dividend to 39 and continue with: 397 / 51

Advancing to step 4:
When dividing 397 by 51, we get 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 67.0
If we subtract 357 from 397, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 5:
400 divided by 51 is 7 with a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 67.7
Subtract 357 from 400 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 6:
51 can be fit into 430 8 times, resulting in a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 67.78
If we take 408 away from 430, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 7:
The number 51 fits into 220 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 67.784
Subtract 204 from 220 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
51 can be fit into 160 3 times, resulting in a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 67.7843
Subtract 153 from 160 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 9:
The number 51 fits into 70 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 67.78431
If we subtract 51 from 70, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 10:
190 divided by 51 is 3 with a remainder of 37.
The next digit of our result is 3. 
Result so far: 67.784313
Deduct 153 from 190 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 11:
51 can be fit into 370 7 times, resulting in a remainder of 13.
The next digit of our result is 7. 
Result so far: 67.7843137
If we take 357 away from 370, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 12:
51 can be fit into 130 2 times, resulting in a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 67.78431372
If we take 102 away from 130, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final result is 67.78431372 with a remainder of 2.8e-08.