78120975 divided by 407 
Our goal is to divide 78120975 by 407.

Going ahead to step 1:
If we divide 7 by 407, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
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 / 407

Step 2:
If we divide 78 by 407, we get 0 and a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Bring next digit (1) of the dividend behind the 78 and repeat the process: 781 / 407

Step 3:
The number 407 fits into 781 1 times, leaving a remainder of 374.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 407 from 781 to get 374.
Include the next digit (2) from the dividend after 374, then repeat: 3742 / 407

Going ahead to step 4:
3742 divided by 407 is 9 with a remainder of 79.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtract 3663 from 3742 to get 79.
Grab the next digit (0) from the dividend, add it to 79, then carry on: 790 / 407

Going ahead to step 5:
When dividing 790 by 407, we get 1 with a remainder of 383.
The next digit of our result is 1. 
Result so far: 191.0
If we take 407 away from 790, we end up with 383.
Fetch the next digit (9) from the dividend, attach it to 383 and continue: 3839 / 407

Moving on to step 6:
The number 407 fits into 3839 9 times, leaving a remainder of 176.
Put 9 as the next digit of the answer. 
Result so far: 1919.0
The remainder is 176 after subtracting 3663 from 3839.
Grab the next digit (7) from the dividend, add it to 176, then carry on: 1767 / 407

Advancing to step 7:
When dividing 1767 by 407, we get 4 with a remainder of 139.
Put 4 as the next digit of the answer. 
Result so far: 19194.0
Deduct 1628 from 1767 and we're left with 139.
Include the next digit (5) from the dividend after 139, then repeat: 1395 / 407

Going ahead to step 8:
If we divide 1395 by 407, we get 3 and a remainder of 174.
Write down 3 as next digit of the result. 
Result so far: 191943.0
Subtract 1221 from 1395 to get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Let's proceed to step 9:
407 can be fit into 1740 4 times, resulting in a remainder of 112.
The next digit of our result is 4. 
Result so far: 191943.4
If we take 1628 away from 1740, we end up with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 10:
If we divide 1120 by 407, we get 2 and a remainder of 306.
The number 2 becomes the next digit in our result. 
Result so far: 191943.42
Subtract 814 from 1120 to get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Let's proceed to step 11:
3060 divided by 407 is 7 with a remainder of 211.
The number 7 becomes the next digit in our result. 
Result so far: 191943.427
Subtracting 2849 from 3060 leaves us with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Moving on to step 12:
2110 divided by 407 is 5 with a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 191943.4275
If we take 2035 away from 2110, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 13:
When dividing 750 by 407, we get 1 with a remainder of 343.
Use 1 as the next digit of our solution. 
Result so far: 191943.42751
Deduct 407 from 750 and we're left with 343.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

Step 14:
If we divide 3430 by 407, we get 8 and a remainder of 174.
Record the quotient 8 as the next digit in the result. 
Result so far: 191943.427518
Deduct 3256 from 3430 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Going ahead to step 15:
When dividing 1740 by 407, we get 4 with a remainder of 112.
Write down 4 as next digit of the result. 
Result so far: 191943.4275184
Deduct 1628 from 1740 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 16:
407 goes into 1120 2 times with a remainder of 306.
Write down 2 as next digit of the result. 
Result so far: 191943.42751842
The remainder is 306 after subtracting 814 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Our division results in 191943.42751842 with a remaining 3.06e-07.