86130554 ÷ 51 
We're looking to find how many times 51 goes into 86130554.

Step 1:
8 divided by 51 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 51

On to step 2:
51 goes into 86 1 times with a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 51 from 86, we get 35.
Include the next digit (1) from the dividend after 35, then repeat: 351 / 51

Advancing to step 3:
If we divide 351 by 51, we get 6 and a remainder of 45.
Put 6 as the next digit of the answer. 
Result so far: 16.0
The remainder is 45 after subtracting 306 from 351.
Fetch the next digit (3) from the dividend, attach it to 45 and continue: 453 / 51

Advancing to step 4:
If we divide 453 by 51, we get 8 and a remainder of 45.
Put 8 as the next digit of the answer. 
Result so far: 168.0
Subtracting 408 from 453 leaves us with 45.
Append the next digit (0) from the dividend to 45 and continue with: 450 / 51

Step 5:
51 goes into 450 8 times with a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 1688.0
The remainder is 42 after subtracting 408 from 450.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 51

Moving on to step 6:
425 divided by 51 is 8 with a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 16888.0
The remainder is 17 after subtracting 408 from 425.
Grab the next digit (5) from the dividend, add it to 17, then carry on: 175 / 51

On to step 7:
51 can be fit into 175 3 times, resulting in a remainder of 22.
The next digit of our result is 3. 
Result so far: 168883.0
Deduct 153 from 175 and we're left with 22.
Grab the next digit (4) from the dividend, add it to 22, then carry on: 224 / 51

On to step 8:
The number 51 fits into 224 4 times, leaving a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 1688834.0
If we subtract 204 from 224, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
51 goes into 200 3 times with a remainder of 47.
Record the quotient 3 as the next digit in the result. 
Result so far: 1688834.3
Subtracting 153 from 200 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 10:
The number 51 fits into 470 9 times, leaving a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 1688834.39
Subtract 459 from 470 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 11:
110 divided by 51 is 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 1688834.392
If we take 102 away from 110, we end up with 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 12:
When dividing 80 by 51, we get 1 with a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 1688834.3921
Subtract 51 from 80 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 13:
The number 51 fits into 290 5 times, leaving a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 1688834.39215
Subtracting 255 from 290 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 14:
The number 51 fits into 350 6 times, leaving a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 1688834.392156
If we subtract 306 from 350, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 15:
The number 51 fits into 440 8 times, leaving a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 1688834.3921568
Subtract 408 from 440 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 16:
If we divide 320 by 51, we get 6 and a remainder of 14.
The next digit of our result is 6. 
Result so far: 1688834.39215686
Subtract 306 from 320 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 1688834.39215686 and a remainder of 1.4e-08.