Let's divide 79658736 by 642
We're looking to find how many times 642 goes into 79658736.

On to step 1:
The number 642 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 642

Let's proceed to step 2:
79 divided by 642 is 0 with a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 79, we end up with 79.
Append the next digit (6) from the dividend to 79 and continue with: 796 / 642

Moving on to step 3:
642 can be fit into 796 1 times, resulting in a remainder of 154.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 642 from 796 to get 154.
Fetch the next digit (5) from the dividend, attach it to 154 and continue: 1545 / 642

Going ahead to step 4:
642 can be fit into 1545 2 times, resulting in a remainder of 261.
The next digit of our result is 2. 
Result so far: 12.0
If we take 1284 away from 1545, we end up with 261.
Grab the next digit (8) from the dividend, add it to 261, then carry on: 2618 / 642

On to step 5:
2618 divided by 642 is 4 with a remainder of 50.
Put 4 as the next digit of the answer. 
Result so far: 124.0
The remainder is 50 after subtracting 2568 from 2618.
Grab the next digit (7) from the dividend, add it to 50, then carry on: 507 / 642

Going ahead to step 6:
642 can be fit into 507 0 times, resulting in a remainder of 507.
The number 0 becomes the next digit in our result. 
Result so far: 1240.0
Subtract 0 from 507 to get 507.
Include the next digit (3) from the dividend after 507, then repeat: 5073 / 642

Moving on to step 7:
5073 divided by 642 is 7 with a remainder of 579.
Put 7 as the next digit of the answer. 
Result so far: 12407.0
Subtracting 4494 from 5073 leaves us with 579.
Grab the next digit (6) from the dividend, add it to 579, then carry on: 5796 / 642

Moving on to step 8:
642 goes into 5796 9 times with a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 124079.0
Subtracting 5778 from 5796 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
The number 642 fits into 180 0 times, leaving a remainder of 180.
Write down 0 as next digit of the result. 
Result so far: 124079.0
The remainder is 180 after subtracting 0 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 10:
642 goes into 1800 2 times with a remainder of 516.
Record the quotient 2 as the next digit in the result. 
Result so far: 124079.02
If we take 1284 away from 1800, we end up with 516.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5160, and continue the process.

Step 11:
5160 divided by 642 is 8 with a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 124079.028
Deduct 5136 from 5160 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 12:
The number 642 fits into 240 0 times, leaving a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 124079.028
If we take 0 away from 240, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 13:
642 can be fit into 2400 3 times, resulting in a remainder of 474.
The next digit of our result is 3. 
Result so far: 124079.02803
Deduct 1926 from 2400 and we're left with 474.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Step 14:
The number 642 fits into 4740 7 times, leaving a remainder of 246.
The next digit of our result is 7. 
Result so far: 124079.028037
If we subtract 4494 from 4740, we get 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Going ahead to step 15:
2460 divided by 642 is 3 with a remainder of 534.
Write down 3 as next digit of the result. 
Result so far: 124079.0280373
Subtracting 1926 from 2460 leaves us with 534.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

Going ahead to step 16:
642 goes into 5340 8 times with a remainder of 204.
Write down 8 as next digit of the result. 
Result so far: 124079.02803738
Subtract 5136 from 5340 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

The final result is 124079.02803738 with a remainder of 2.04e-07.