70209303 ÷ 778 
Our goal is to divide 70209303 by 778.

On to step 1:
When dividing 7 by 778, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 778

Moving on to step 2:
If we divide 70 by 778, we get 0 and a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 70, we get 70.
Append the next digit (2) from the dividend to 70 and continue with: 702 / 778

Step 3:
When dividing 702 by 778, we get 0 with a remainder of 702.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 702, we get 702.
Append the next digit (0) from the dividend to 702 and continue with: 7020 / 778

Going ahead to step 4:
778 can be fit into 7020 9 times, resulting in a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 7002 from 7020 and we're left with 18.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 778

On to step 5:
If we divide 189 by 778, we get 0 and a remainder of 189.
Record the quotient 0 as the next digit in the result. 
Result so far: 90.0
Subtracting 0 from 189 leaves us with 189.
Grab the next digit (3) from the dividend, add it to 189, then carry on: 1893 / 778

Advancing to step 6:
When dividing 1893 by 778, we get 2 with a remainder of 337.
Put 2 as the next digit of the answer. 
Result so far: 902.0
Subtract 1556 from 1893 to get 337.
Fetch the next digit (0) from the dividend, attach it to 337 and continue: 3370 / 778

Advancing to step 7:
If we divide 3370 by 778, we get 4 and a remainder of 258.
The next digit of our result is 4. 
Result so far: 9024.0
Subtracting 3112 from 3370 leaves us with 258.
Append the next digit (3) from the dividend to 258 and continue with: 2583 / 778

Let's proceed to step 8:
778 goes into 2583 3 times with a remainder of 249.
The next digit of our result is 3. 
Result so far: 90243.0
If we take 2334 away from 2583, we end up with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Moving on to step 9:
The number 778 fits into 2490 3 times, leaving a remainder of 156.
Record the quotient 3 as the next digit in the result. 
Result so far: 90243.3
Subtract 2334 from 2490 to get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Moving on to step 10:
778 can be fit into 1560 2 times, resulting in a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 90243.32
If we take 1556 away from 1560, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 11:
When dividing 40 by 778, we get 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 90243.32
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 12:
The number 778 fits into 400 0 times, leaving a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 90243.32
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The quotient of the division is 90243.32, and the remainder is 0.004.