Let's divide 78402889 by 529
Our goal is to divide 78402889 by 529.

Going ahead to step 1:
When dividing 7 by 529, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 529

Going ahead to step 2:
78 divided by 529 is 0 with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Append the next digit (4) from the dividend to 78 and continue with: 784 / 529

Let's proceed to step 3:
784 divided by 529 is 1 with a remainder of 255.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 529 from 784 and we're left with 255.
Take the next digit (0) from the dividend and append it to 255, then repeat: 2550 / 529

Moving on to step 4:
The number 529 fits into 2550 4 times, leaving a remainder of 434.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 2116 from 2550, we get 434.
Include the next digit (2) from the dividend after 434, then repeat: 4342 / 529

Step 5:
If we divide 4342 by 529, we get 8 and a remainder of 110.
Use 8 as the next digit of our solution. 
Result so far: 148.0
Subtract 4232 from 4342 to get 110.
Bring next digit (8) of the dividend behind the 110 and repeat the process: 1108 / 529

Moving on to step 6:
If we divide 1108 by 529, we get 2 and a remainder of 50.
Write down 2 as next digit of the result. 
Result so far: 1482.0
Subtract 1058 from 1108 to get 50.
Grab the next digit (8) from the dividend, add it to 50, then carry on: 508 / 529

Step 7:
529 goes into 508 0 times with a remainder of 508.
Write down 0 as next digit of the result. 
Result so far: 14820.0
Subtracting 0 from 508 leaves us with 508.
Append the next digit (9) from the dividend to 508 and continue with: 5089 / 529

Step 8:
5089 divided by 529 is 9 with a remainder of 328.
The number 9 becomes the next digit in our result. 
Result so far: 148209.0
The remainder is 328 after subtracting 4761 from 5089.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Step 9:
529 goes into 3280 6 times with a remainder of 106.
The number 6 becomes the next digit in our result. 
Result so far: 148209.6
If we subtract 3174 from 3280, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Step 10:
When dividing 1060 by 529, we get 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 148209.62
Subtracting 1058 from 1060 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 11:
If we divide 20 by 529, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 148209.62
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 12:
529 goes into 200 0 times with a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 148209.62
If we take 0 away from 200, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

After the division, we end up with 148209.62 and a remainder of 0.002.