78472990 divided by 310 
We want to figure out the number of times 78472990 can be divided by 310.

Let's proceed to step 1:
310 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 310

Going ahead to step 2:
310 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
Subtract 0 from 78 to get 78.
Bring next digit (4) of the dividend behind the 78 and repeat the process: 784 / 310

Step 3:
The number 310 fits into 784 2 times, leaving a remainder of 164.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 620 from 784 leaves us with 164.
Fetch the next digit (7) from the dividend, attach it to 164 and continue: 1647 / 310

On to step 4:
310 goes into 1647 5 times with a remainder of 97.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we take 1550 away from 1647, we end up with 97.
Take the next digit (2) from the dividend and append it to 97, then repeat: 972 / 310

Step 5:
310 can be fit into 972 3 times, resulting in a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 253.0
If we take 930 away from 972, we end up with 42.
Include the next digit (9) from the dividend after 42, then repeat: 429 / 310

On to step 6:
429 divided by 310 is 1 with a remainder of 119.
Use 1 as the next digit of our solution. 
Result so far: 2531.0
If we take 310 away from 429, we end up with 119.
Append the next digit (9) from the dividend to 119 and continue with: 1199 / 310

Going ahead to step 7:
The number 310 fits into 1199 3 times, leaving a remainder of 269.
Write down 3 as next digit of the result. 
Result so far: 25313.0
Deduct 930 from 1199 and we're left with 269.
Fetch the next digit (0) from the dividend, attach it to 269 and continue: 2690 / 310

Advancing to step 8:
The number 310 fits into 2690 8 times, leaving a remainder of 210.
The number 8 becomes the next digit in our result. 
Result so far: 253138.0
Subtracting 2480 from 2690 leaves us with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

On to step 9:
The number 310 fits into 2100 6 times, leaving a remainder of 240.
Put 6 as the next digit of the answer. 
Result so far: 253138.6
The remainder is 240 after subtracting 1860 from 2100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 10:
The number 310 fits into 2400 7 times, leaving a remainder of 230.
The number 7 becomes the next digit in our result. 
Result so far: 253138.67
Subtracting 2170 from 2400 leaves us with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

On to step 11:
310 goes into 2300 7 times with a remainder of 130.
Use 7 as the next digit of our solution. 
Result so far: 253138.677
Deduct 2170 from 2300 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

The quotient of the division is 253138.677, and the remainder is 0.013.