77456391 ÷ 306 
We want to divide 77456391 by 306.

Going ahead to step 1:
7 divided by 306 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 306

On to step 2:
When dividing 77 by 306, we get 0 with a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Grab the next digit (4) from the dividend, add it to 77, then carry on: 774 / 306

Going ahead to step 3:
If we divide 774 by 306, we get 2 and a remainder of 162.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 612 from 774 leaves us with 162.
Append the next digit (5) from the dividend to 162 and continue with: 1625 / 306

Advancing to step 4:
If we divide 1625 by 306, we get 5 and a remainder of 95.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
If we subtract 1530 from 1625, we get 95.
Fetch the next digit (6) from the dividend, attach it to 95 and continue: 956 / 306

Step 5:
The number 306 fits into 956 3 times, leaving a remainder of 38.
Write down 3 as next digit of the result. 
Result so far: 253.0
The remainder is 38 after subtracting 918 from 956.
Take the next digit (3) from the dividend and append it to 38, then repeat: 383 / 306

Moving on to step 6:
306 can be fit into 383 1 times, resulting in a remainder of 77.
The next digit of our result is 1. 
Result so far: 2531.0
If we subtract 306 from 383, we get 77.
Grab the next digit (9) from the dividend, add it to 77, then carry on: 779 / 306

Moving on to step 7:
When dividing 779 by 306, we get 2 with a remainder of 167.
Record the quotient 2 as the next digit in the result. 
Result so far: 25312.0
Subtracting 612 from 779 leaves us with 167.
Fetch the next digit (1) from the dividend, attach it to 167 and continue: 1671 / 306

Advancing to step 8:
306 goes into 1671 5 times with a remainder of 141.
Record the quotient 5 as the next digit in the result. 
Result so far: 253125.0
Subtracting 1530 from 1671 leaves us with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Step 9:
When dividing 1410 by 306, we get 4 with a remainder of 186.
The number 4 becomes the next digit in our result. 
Result so far: 253125.4
If we take 1224 away from 1410, we end up with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Moving on to step 10:
306 goes into 1860 6 times with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 253125.46
If we take 1836 away from 1860, we end up 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.

On to step 11:
If we divide 240 by 306, we get 0 and a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 253125.46
Deduct 0 from 240 and we're left 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.

Advancing to step 12:
2400 divided by 306 is 7 with a remainder of 258.
The next digit of our result is 7. 
Result so far: 253125.4607
If we take 2142 away from 2400, we end up with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Step 13:
306 goes into 2580 8 times with a remainder of 132.
Use 8 as the next digit of our solution. 
Result so far: 253125.46078
The remainder is 132 after subtracting 2448 from 2580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 14:
1320 divided by 306 is 4 with a remainder of 96.
The number 4 becomes the next digit in our result. 
Result so far: 253125.460784
If we take 1224 away from 1320, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 15:
The number 306 fits into 960 3 times, leaving a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 253125.4607843
The remainder is 42 after subtracting 918 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 16:
306 goes into 420 1 times with a remainder of 114.
Record the quotient 1 as the next digit in the result. 
Result so far: 253125.46078431
The remainder is 114 after subtracting 306 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

After the division, we end up with 253125.46078431 and a remainder of 1.14e-07.