We look at the division of 25309371 by 602 
We want to figure out the number of times 25309371 can be divided by 602.

Going ahead to step 1:
When dividing 2 by 602, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 602

Moving on to step 2:
When dividing 25 by 602, we get 0 with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Take the next digit (3) from the dividend and append it to 25, then repeat: 253 / 602

Advancing to step 3:
602 can be fit into 253 0 times, resulting in a remainder of 253.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 253 leaves us with 253.
Grab the next digit (0) from the dividend, add it to 253, then carry on: 2530 / 602

On to step 4:
If we divide 2530 by 602, we get 4 and a remainder of 122.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 2408 from 2530 to get 122.
Append the next digit (9) from the dividend to 122 and continue with: 1229 / 602

Let's proceed to step 5:
When dividing 1229 by 602, we get 2 with a remainder of 25.
Use 2 as the next digit of our solution. 
Result so far: 42.0
Subtract 1204 from 1229 to get 25.
Include the next digit (3) from the dividend after 25, then repeat: 253 / 602

Advancing to step 6:
602 can be fit into 253 0 times, resulting in a remainder of 253.
Use 0 as the next digit of our solution. 
Result so far: 420.0
Subtract 0 from 253 to get 253.
Fetch the next digit (7) from the dividend, attach it to 253 and continue: 2537 / 602

Advancing to step 7:
When dividing 2537 by 602, we get 4 with a remainder of 129.
Record the quotient 4 as the next digit in the result. 
Result so far: 4204.0
The remainder is 129 after subtracting 2408 from 2537.
Fetch the next digit (1) from the dividend, attach it to 129 and continue: 1291 / 602

Step 8:
1291 divided by 602 is 2 with a remainder of 87.
Use 2 as the next digit of our solution. 
Result so far: 42042.0
Deduct 1204 from 1291 and we're left with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Advancing to step 9:
602 can be fit into 870 1 times, resulting in a remainder of 268.
The next digit of our result is 1. 
Result so far: 42042.1
If we take 602 away from 870, we end up with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Step 10:
If we divide 2680 by 602, we get 4 and a remainder of 272.
Record the quotient 4 as the next digit in the result. 
Result so far: 42042.14
Subtracting 2408 from 2680 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 11:
The number 602 fits into 2720 4 times, leaving a remainder of 312.
Record the quotient 4 as the next digit in the result. 
Result so far: 42042.144
Subtract 2408 from 2720 to get 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

The final result is 42042.144 with a remainder of 0.0312.