We divide 77820707 by 643
Let's see how many times 643 fits into 77820707.

On to step 1:
When dividing 7 by 643, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 643

Going ahead to step 2:
When dividing 77 by 643, we get 0 with a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Take the next digit (8) from the dividend and append it to 77, then repeat: 778 / 643

Step 3:
778 divided by 643 is 1 with a remainder of 135.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 643 from 778 and we're left with 135.
Include the next digit (2) from the dividend after 135, then repeat: 1352 / 643

On to step 4:
The number 643 fits into 1352 2 times, leaving a remainder of 66.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 1286 away from 1352, we end up with 66.
Fetch the next digit (0) from the dividend, attach it to 66 and continue: 660 / 643

Going ahead to step 5:
660 divided by 643 is 1 with a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
Deduct 643 from 660 and we're left with 17.
Grab the next digit (7) from the dividend, add it to 17, then carry on: 177 / 643

Step 6:
643 can be fit into 177 0 times, resulting in a remainder of 177.
Put 0 as the next digit of the answer. 
Result so far: 1210.0
If we take 0 away from 177, we end up with 177.
Include the next digit (0) from the dividend after 177, then repeat: 1770 / 643

Going ahead to step 7:
643 goes into 1770 2 times with a remainder of 484.
Record the quotient 2 as the next digit in the result. 
Result so far: 12102.0
If we subtract 1286 from 1770, we get 484.
Append the next digit (7) from the dividend to 484 and continue with: 4847 / 643

On to step 8:
4847 divided by 643 is 7 with a remainder of 346.
Write down 7 as next digit of the result. 
Result so far: 121027.0
If we take 4501 away from 4847, we end up with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

On to step 9:
643 can be fit into 3460 5 times, resulting in a remainder of 245.
The number 5 becomes the next digit in our result. 
Result so far: 121027.5
The remainder is 245 after subtracting 3215 from 3460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

On to step 10:
If we divide 2450 by 643, we get 3 and a remainder of 521.
Record the quotient 3 as the next digit in the result. 
Result so far: 121027.53
The remainder is 521 after subtracting 1929 from 2450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5210, and continue the process.

Step 11:
When dividing 5210 by 643, we get 8 with a remainder of 66.
The number 8 becomes the next digit in our result. 
Result so far: 121027.538
The remainder is 66 after subtracting 5144 from 5210.
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:
643 goes into 660 1 times with a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 121027.5381
Deduct 643 from 660 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 13:
643 can be fit into 170 0 times, resulting in a remainder of 170.
Put 0 as the next digit of the answer. 
Result so far: 121027.5381
If we subtract 0 from 170, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 14:
The number 643 fits into 1700 2 times, leaving a remainder of 414.
Put 2 as the next digit of the answer. 
Result so far: 121027.538102
Subtract 1286 from 1700 to get 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Advancing to step 15:
643 goes into 4140 6 times with a remainder of 282.
Record the quotient 6 as the next digit in the result. 
Result so far: 121027.5381026
Subtract 3858 from 4140 to get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Moving on to step 16:
The number 643 fits into 2820 4 times, leaving a remainder of 248.
The number 4 becomes the next digit in our result. 
Result so far: 121027.53810264
Subtracting 2572 from 2820 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

The final outcome is 121027.53810264, with a leftover of 2.48e-07.