We're dividing 76251381 by 51 
Our goal is to divide 76251381 by 51.

Let's proceed to step 1:
51 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 51

Going ahead to step 2:
When dividing 76 by 51, we get 1 with a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 51 from 76 leaves us with 25.
Fetch the next digit (2) from the dividend, attach it to 25 and continue: 252 / 51

On to step 3:
252 divided by 51 is 4 with a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we subtract 204 from 252, we get 48.
Fetch the next digit (5) from the dividend, attach it to 48 and continue: 485 / 51

Step 4:
If we divide 485 by 51, we get 9 and a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 149.0
If we subtract 459 from 485, we get 26.
Grab the next digit (1) from the dividend, add it to 26, then carry on: 261 / 51

Going ahead to step 5:
51 can be fit into 261 5 times, resulting in a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 1495.0
If we take 255 away from 261, we end up with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 51

Advancing to step 6:
When dividing 63 by 51, we get 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 14951.0
If we subtract 51 from 63, we get 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 51

Step 7:
128 divided by 51 is 2 with a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 149512.0
Deduct 102 from 128 and we're left with 26.
Take the next digit (1) from the dividend and append it to 26, then repeat: 261 / 51

Moving on to step 8:
51 goes into 261 5 times with a remainder of 6.
Write down 5 as next digit of the result. 
Result so far: 1495125.0
If we take 255 away from 261, we end up 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 9:
The number 51 fits into 60 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1495125.1
If we take 51 away from 60, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 10:
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: 1495125.11
Deduct 51 from 90 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Our division results in 1495125.11 with a remaining 0.039.