We look at the division of 80778144 by 642 
Let's see how many times 642 fits into 80778144.

Going ahead to step 1:
642 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 642

Let's proceed to step 2:
642 goes into 80 0 times with a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 80, we end up with 80.
Fetch the next digit (7) from the dividend, attach it to 80 and continue: 807 / 642

Advancing to step 3:
807 divided by 642 is 1 with a remainder of 165.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 642 from 807 and we're left with 165.
Grab the next digit (7) from the dividend, add it to 165, then carry on: 1657 / 642

Advancing to step 4:
If we divide 1657 by 642, we get 2 and a remainder of 373.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 373 after subtracting 1284 from 1657.
Include the next digit (8) from the dividend after 373, then repeat: 3738 / 642

Moving on to step 5:
642 goes into 3738 5 times with a remainder of 528.
Put 5 as the next digit of the answer. 
Result so far: 125.0
If we subtract 3210 from 3738, we get 528.
Grab the next digit (1) from the dividend, add it to 528, then carry on: 5281 / 642

Moving on to step 6:
When dividing 5281 by 642, we get 8 with a remainder of 145.
Put 8 as the next digit of the answer. 
Result so far: 1258.0
Deduct 5136 from 5281 and we're left with 145.
Append the next digit (4) from the dividend to 145 and continue with: 1454 / 642

Advancing to step 7:
642 can be fit into 1454 2 times, resulting in a remainder of 170.
The number 2 becomes the next digit in our result. 
Result so far: 12582.0
The remainder is 170 after subtracting 1284 from 1454.
Grab the next digit (4) from the dividend, add it to 170, then carry on: 1704 / 642

Advancing to step 8:
642 can be fit into 1704 2 times, resulting in a remainder of 420.
Put 2 as the next digit of the answer. 
Result so far: 125822.0
Deduct 1284 from 1704 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 9:
642 can be fit into 4200 6 times, resulting in a remainder of 348.
Put 6 as the next digit of the answer. 
Result so far: 125822.6
If we subtract 3852 from 4200, we get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

On to step 10:
If we divide 3480 by 642, we get 5 and a remainder of 270.
Write down 5 as next digit of the result. 
Result so far: 125822.65
Deduct 3210 from 3480 and we're left with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

On to step 11:
If we divide 2700 by 642, we get 4 and a remainder of 132.
Use 4 as the next digit of our solution. 
Result so far: 125822.654
Subtracting 2568 from 2700 leaves us with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 12:
1320 divided by 642 is 2 with a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 125822.6542
If we subtract 1284 from 1320, 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.

Advancing to step 13:
642 can be fit into 360 0 times, resulting in a remainder of 360.
The next digit of our result is 0. 
Result so far: 125822.6542
Subtract 0 from 360 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 14:
If we divide 3600 by 642, we get 5 and a remainder of 390.
Put 5 as the next digit of the answer. 
Result so far: 125822.654205
Deduct 3210 from 3600 and we're left with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Step 15:
The number 642 fits into 3900 6 times, leaving a remainder of 48.
Use 6 as the next digit of our solution. 
Result so far: 125822.6542056
If we take 3852 away from 3900, 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 16:
642 goes into 480 0 times with a remainder of 480.
Put 0 as the next digit of the answer. 
Result so far: 125822.6542056
Subtract 0 from 480 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

The final result is 125822.6542056 with a remainder of 4.8e-07.