We look at the division of 78157742 by 649 
Let's see how many times 649 fits into 78157742.

Advancing to step 1:
When dividing 7 by 649, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 649

Going ahead to step 2:
The number 649 fits into 78 0 times, leaving a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Append the next digit (1) from the dividend to 78 and continue with: 781 / 649

Let's proceed to step 3:
The number 649 fits into 781 1 times, leaving a remainder of 132.
The next digit of our result is 1. 
Result so far: 1.0
If we take 649 away from 781, we end up with 132.
Take the next digit (5) from the dividend and append it to 132, then repeat: 1325 / 649

Going ahead to step 4:
649 can be fit into 1325 2 times, resulting in a remainder of 27.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 27 after subtracting 1298 from 1325.
Grab the next digit (7) from the dividend, add it to 27, then carry on: 277 / 649

Going ahead to step 5:
277 divided by 649 is 0 with a remainder of 277.
Put 0 as the next digit of the answer. 
Result so far: 120.0
Deduct 0 from 277 and we're left with 277.
Fetch the next digit (7) from the dividend, attach it to 277 and continue: 2777 / 649

Moving on to step 6:
The number 649 fits into 2777 4 times, leaving a remainder of 181.
Use 4 as the next digit of our solution. 
Result so far: 1204.0
If we subtract 2596 from 2777, we get 181.
Fetch the next digit (4) from the dividend, attach it to 181 and continue: 1814 / 649

Advancing to step 7:
649 can be fit into 1814 2 times, resulting in a remainder of 516.
The next digit of our result is 2. 
Result so far: 12042.0
If we take 1298 away from 1814, we end up with 516.
Grab the next digit (2) from the dividend, add it to 516, then carry on: 5162 / 649

On to step 8:
649 goes into 5162 7 times with a remainder of 619.
Record the quotient 7 as the next digit in the result. 
Result so far: 120427.0
The remainder is 619 after subtracting 4543 from 5162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6190, and continue the process.

Going ahead to step 9:
When dividing 6190 by 649, we get 9 with a remainder of 349.
Put 9 as the next digit of the answer. 
Result so far: 120427.9
If we subtract 5841 from 6190, we get 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Advancing to step 10:
649 goes into 3490 5 times with a remainder of 245.
Write down 5 as next digit of the result. 
Result so far: 120427.95
If we subtract 3245 from 3490, we get 245.
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 11:
The number 649 fits into 2450 3 times, leaving a remainder of 503.
Put 3 as the next digit of the answer. 
Result so far: 120427.953
If we take 1947 away from 2450, we end up with 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Going ahead to step 12:
If we divide 5030 by 649, we get 7 and a remainder of 487.
Put 7 as the next digit of the answer. 
Result so far: 120427.9537
The remainder is 487 after subtracting 4543 from 5030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4870, and continue the process.

Going ahead to step 13:
If we divide 4870 by 649, we get 7 and a remainder of 327.
The next digit of our result is 7. 
Result so far: 120427.95377
Subtract 4543 from 4870 to get 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

The quotient of the division is 120427.95377, and the remainder is 0.000327.