64071543 ÷ 138 
Our goal is to divide 64071543 by 138.

Advancing to step 1:
138 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 138

Let's proceed to step 2:
138 can be fit into 64 0 times, resulting in a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Fetch the next digit (0) from the dividend, attach it to 64 and continue: 640 / 138

On to step 3:
640 divided by 138 is 4 with a remainder of 88.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 552 from 640 to get 88.
Bring next digit (7) of the dividend behind the 88 and repeat the process: 887 / 138

Moving on to step 4:
138 goes into 887 6 times with a remainder of 59.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
Subtracting 828 from 887 leaves us with 59.
Bring next digit (1) of the dividend behind the 59 and repeat the process: 591 / 138

Moving on to step 5:
The number 138 fits into 591 4 times, leaving a remainder of 39.
Put 4 as the next digit of the answer. 
Result so far: 464.0
If we take 552 away from 591, we end up with 39.
Grab the next digit (5) from the dividend, add it to 39, then carry on: 395 / 138

Moving on to step 6:
The number 138 fits into 395 2 times, leaving a remainder of 119.
Write down 2 as next digit of the result. 
Result so far: 4642.0
If we take 276 away from 395, we end up with 119.
Include the next digit (4) from the dividend after 119, then repeat: 1194 / 138

Going ahead to step 7:
The number 138 fits into 1194 8 times, leaving a remainder of 90.
Record the quotient 8 as the next digit in the result. 
Result so far: 46428.0
The remainder is 90 after subtracting 1104 from 1194.
Append the next digit (3) from the dividend to 90 and continue with: 903 / 138

Going ahead to step 8:
The number 138 fits into 903 6 times, leaving a remainder of 75.
Put 6 as the next digit of the answer. 
Result so far: 464286.0
Subtract 828 from 903 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 9:
138 can be fit into 750 5 times, resulting in a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 464286.5
If we subtract 690 from 750, we 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.

Moving on to step 10:
If we divide 600 by 138, we get 4 and a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 464286.54
If we take 552 away from 600, we end up 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.

Going ahead to step 11:
480 divided by 138 is 3 with a remainder of 66.
Record the quotient 3 as the next digit in the result. 
Result so far: 464286.543
Subtract 414 from 480 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 12:
If we divide 660 by 138, we get 4 and a remainder of 108.
Record the quotient 4 as the next digit in the result. 
Result so far: 464286.5434
If we take 552 away from 660, we end up with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Let's proceed to step 13:
1080 divided by 138 is 7 with a remainder of 114.
Write down 7 as next digit of the result. 
Result so far: 464286.54347
If we subtract 966 from 1080, we get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

On to step 14:
1140 divided by 138 is 8 with a remainder of 36.
The number 8 becomes the next digit in our result. 
Result so far: 464286.543478
If we subtract 1104 from 1140, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 15:
360 divided by 138 is 2 with a remainder of 84.
Put 2 as the next digit of the answer. 
Result so far: 464286.5434782
Subtract 276 from 360 to get 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 16:
138 can be fit into 840 6 times, resulting in a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 464286.54347826
Deduct 828 from 840 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 464286.54347826, with a leftover of 1.2e-08.