We're dividing 55420489 by 86 
We're looking to find how many times 86 goes into 55420489.

Step 1:
If we divide 5 by 86, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 86

Let's proceed to step 2:
When dividing 55 by 86, we get 0 with a remainder of 55.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 55 and we're left with 55.
Append the next digit (4) from the dividend to 55 and continue with: 554 / 86

Step 3:
554 divided by 86 is 6 with a remainder of 38.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 516 away from 554, we end up with 38.
Bring next digit (2) of the dividend behind the 38 and repeat the process: 382 / 86

Advancing to step 4:
If we divide 382 by 86, we get 4 and a remainder of 38.
Write down 4 as next digit of the result. 
Result so far: 64.0
If we subtract 344 from 382, we get 38.
Include the next digit (0) from the dividend after 38, then repeat: 380 / 86

Let's proceed to step 5:
380 divided by 86 is 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 644.0
If we take 344 away from 380, we end up with 36.
Grab the next digit (4) from the dividend, add it to 36, then carry on: 364 / 86

On to step 6:
86 goes into 364 4 times with a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 6444.0
Subtract 344 from 364 to get 20.
Append the next digit (8) from the dividend to 20 and continue with: 208 / 86

Let's proceed to step 7:
If we divide 208 by 86, we get 2 and a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 64442.0
If we take 172 away from 208, we end up with 36.
Grab the next digit (9) from the dividend, add it to 36, then carry on: 369 / 86

Going ahead to step 8:
When dividing 369 by 86, we get 4 with a remainder of 25.
The next digit of our result is 4. 
Result so far: 644424.0
Subtract 344 from 369 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 9:
86 goes into 250 2 times with a remainder of 78.
The number 2 becomes the next digit in our result. 
Result so far: 644424.2
The remainder is 78 after subtracting 172 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 10:
780 divided by 86 is 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 644424.29
Deduct 774 from 780 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.

Step 11:
60 divided by 86 is 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 644424.29
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 12:
When dividing 600 by 86, we get 6 with a remainder of 84.
Use 6 as the next digit of our solution. 
Result so far: 644424.2906
Subtracting 516 from 600 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 13:
If we divide 840 by 86, we get 9 and a remainder of 66.
Put 9 as the next digit of the answer. 
Result so far: 644424.29069
The remainder is 66 after subtracting 774 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 14:
The number 86 fits into 660 7 times, leaving a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 644424.290697
The remainder is 58 after subtracting 602 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 15:
580 divided by 86 is 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 644424.2906976
If we subtract 516 from 580, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 16:
640 divided by 86 is 7 with a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 644424.29069767
Deduct 602 from 640 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final outcome is 644424.29069767, with a leftover of 3.8e-08.