We look at the division of 78423607 by 515 
Our goal is to divide 78423607 by 515.

Advancing to step 1:
When dividing 7 by 515, we get 0 with 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.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 515

Step 2:
515 goes into 78 0 times with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Fetch the next digit (4) from the dividend, attach it to 78 and continue: 784 / 515

Going ahead to step 3:
If we divide 784 by 515, we get 1 and a remainder of 269.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 515 away from 784, we end up with 269.
Bring next digit (2) of the dividend behind the 269 and repeat the process: 2692 / 515

Moving on to step 4:
The number 515 fits into 2692 5 times, leaving a remainder of 117.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we take 2575 away from 2692, we end up with 117.
Bring next digit (3) of the dividend behind the 117 and repeat the process: 1173 / 515

Advancing to step 5:
When dividing 1173 by 515, we get 2 with a remainder of 143.
Use 2 as the next digit of our solution. 
Result so far: 152.0
Subtract 1030 from 1173 to get 143.
Fetch the next digit (6) from the dividend, attach it to 143 and continue: 1436 / 515

Going ahead to step 6:
The number 515 fits into 1436 2 times, leaving a remainder of 406.
Use 2 as the next digit of our solution. 
Result so far: 1522.0
Deduct 1030 from 1436 and we're left with 406.
Append the next digit (0) from the dividend to 406 and continue with: 4060 / 515

Advancing to step 7:
515 can be fit into 4060 7 times, resulting in a remainder of 455.
The next digit of our result is 7. 
Result so far: 15227.0
If we take 3605 away from 4060, we end up with 455.
Grab the next digit (7) from the dividend, add it to 455, then carry on: 4557 / 515

On to step 8:
When dividing 4557 by 515, we get 8 with a remainder of 437.
Write down 8 as next digit of the result. 
Result so far: 152278.0
Deduct 4120 from 4557 and we're left with 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Let's proceed to step 9:
515 goes into 4370 8 times with a remainder of 250.
The number 8 becomes the next digit in our result. 
Result so far: 152278.8
Deduct 4120 from 4370 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 10:
515 goes into 2500 4 times with a remainder of 440.
Record the quotient 4 as the next digit in the result. 
Result so far: 152278.84
Subtract 2060 from 2500 to get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Advancing to step 11:
When dividing 4400 by 515, we get 8 with a remainder of 280.
Use 8 as the next digit of our solution. 
Result so far: 152278.848
The remainder is 280 after subtracting 4120 from 4400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Going ahead to step 12:
If we divide 2800 by 515, we get 5 and a remainder of 225.
Put 5 as the next digit of the answer. 
Result so far: 152278.8485
Subtract 2575 from 2800 to get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Let's proceed to step 13:
515 can be fit into 2250 4 times, resulting in a remainder of 190.
The number 4 becomes the next digit in our result. 
Result so far: 152278.84854
Deduct 2060 from 2250 and we're left with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Moving on to step 14:
The number 515 fits into 1900 3 times, leaving a remainder of 355.
Record the quotient 3 as the next digit in the result. 
Result so far: 152278.848543
If we take 1545 away from 1900, we end up with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Let's proceed to step 15:
When dividing 3550 by 515, we get 6 with a remainder of 460.
Put 6 as the next digit of the answer. 
Result so far: 152278.8485436
Deduct 3090 from 3550 and we're left with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

On to step 16:
The number 515 fits into 4600 8 times, leaving a remainder of 480.
Use 8 as the next digit of our solution. 
Result so far: 152278.84854368
Deduct 4120 from 4600 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Our division results in 152278.84854368 with a remaining 4.8e-07.