15573378 ÷ 587 
We're looking to find how many times 587 goes into 15573378.

Advancing to step 1:
When dividing 1 by 587, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 587

Advancing to step 2:
587 can be fit into 15 0 times, resulting in a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Take the next digit (5) from the dividend and append it to 15, then repeat: 155 / 587

Let's proceed to step 3:
The number 587 fits into 155 0 times, leaving a remainder of 155.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 155, we end up with 155.
Include the next digit (7) from the dividend after 155, then repeat: 1557 / 587

On to step 4:
If we divide 1557 by 587, we get 2 and a remainder of 383.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 1174 from 1557 leaves us with 383.
Append the next digit (3) from the dividend to 383 and continue with: 3833 / 587

Going ahead to step 5:
587 goes into 3833 6 times with a remainder of 311.
Put 6 as the next digit of the answer. 
Result so far: 26.0
If we take 3522 away from 3833, we end up with 311.
Append the next digit (3) from the dividend to 311 and continue with: 3113 / 587

Advancing to step 6:
3113 divided by 587 is 5 with a remainder of 178.
Use 5 as the next digit of our solution. 
Result so far: 265.0
If we take 2935 away from 3113, we end up with 178.
Take the next digit (7) from the dividend and append it to 178, then repeat: 1787 / 587

Step 7:
587 goes into 1787 3 times with a remainder of 26.
The number 3 becomes the next digit in our result. 
Result so far: 2653.0
If we take 1761 away from 1787, we end up with 26.
Take the next digit (8) from the dividend and append it to 26, then repeat: 268 / 587

Let's proceed to step 8:
When dividing 268 by 587, we get 0 with a remainder of 268.
Write down 0 as next digit of the result. 
Result so far: 26530.0
If we take 0 away from 268, 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.

Advancing to step 9:
When dividing 2680 by 587, we get 4 with a remainder of 332.
Use 4 as the next digit of our solution. 
Result so far: 26530.4
Deduct 2348 from 2680 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Moving on to step 10:
587 goes into 3320 5 times with a remainder of 385.
Write down 5 as next digit of the result. 
Result so far: 26530.45
Subtract 2935 from 3320 to get 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Moving on to step 11:
3850 divided by 587 is 6 with a remainder of 328.
Write down 6 as next digit of the result. 
Result so far: 26530.456
Subtract 3522 from 3850 to get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Step 12:
The number 587 fits into 3280 5 times, leaving a remainder of 345.
Write down 5 as next digit of the result. 
Result so far: 26530.4565
The remainder is 345 after subtracting 2935 from 3280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

Step 13:
If we divide 3450 by 587, we get 5 and a remainder of 515.
Use 5 as the next digit of our solution. 
Result so far: 26530.45655
The remainder is 515 after subtracting 2935 from 3450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

The final result is 26530.45655 with a remainder of 0.000515.