We look at the division of 64987390 by 875 
We want to figure out the number of times 64987390 can be divided by 875.

On to step 1:
6 divided by 875 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 875

Step 2:
64 divided by 875 is 0 with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Take the next digit (9) from the dividend and append it to 64, then repeat: 649 / 875

Moving on to step 3:
649 divided by 875 is 0 with a remainder of 649.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 649, we get 649.
Append the next digit (8) from the dividend to 649 and continue with: 6498 / 875

On to step 4:
If we divide 6498 by 875, we get 7 and a remainder of 373.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 6125 from 6498 leaves us with 373.
Take the next digit (7) from the dividend and append it to 373, then repeat: 3737 / 875

Going ahead to step 5:
3737 divided by 875 is 4 with a remainder of 237.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
Subtract 3500 from 3737 to get 237.
Include the next digit (3) from the dividend after 237, then repeat: 2373 / 875

Step 6:
2373 divided by 875 is 2 with a remainder of 623.
Write down 2 as next digit of the result. 
Result so far: 742.0
The remainder is 623 after subtracting 1750 from 2373.
Grab the next digit (9) from the dividend, add it to 623, then carry on: 6239 / 875

Step 7:
If we divide 6239 by 875, we get 7 and a remainder of 114.
The next digit of our result is 7. 
Result so far: 7427.0
Subtract 6125 from 6239 to get 114.
Take the next digit (0) from the dividend and append it to 114, then repeat: 1140 / 875

Step 8:
875 can be fit into 1140 1 times, resulting in a remainder of 265.
The next digit of our result is 1. 
Result so far: 74271.0
If we subtract 875 from 1140, we get 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Advancing to step 9:
875 goes into 2650 3 times with a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 74271.3
If we take 2625 away from 2650, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 10:
When dividing 250 by 875, we get 0 with a remainder of 250.
The next digit of our result is 0. 
Result so far: 74271.3
If we subtract 0 from 250, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Let's proceed to step 11:
The number 875 fits into 2500 2 times, leaving a remainder of 750.
Put 2 as the next digit of the answer. 
Result so far: 74271.302
If we subtract 1750 from 2500, we get 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Let's proceed to step 12:
875 can be fit into 7500 8 times, resulting in a remainder of 500.
Put 8 as the next digit of the answer. 
Result so far: 74271.3028
Subtract 7000 from 7500 to get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Moving on to step 13:
875 goes into 5000 5 times with a remainder of 625.
Use 5 as the next digit of our solution. 
Result so far: 74271.30285
If we take 4375 away from 5000, we end up with 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

Let's proceed to step 14:
6250 divided by 875 is 7 with a remainder of 125.
The number 7 becomes the next digit in our result. 
Result so far: 74271.302857
The remainder is 125 after subtracting 6125 from 6250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Going ahead to step 15:
If we divide 1250 by 875, we get 1 and a remainder of 375.
Write down 1 as next digit of the result. 
Result so far: 74271.3028571
If we take 875 away from 1250, we end up with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 16:
If we divide 3750 by 875, we get 4 and a remainder of 250.
Write down 4 as next digit of the result. 
Result so far: 74271.30285714
Deduct 3500 from 3750 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

The final outcome is 74271.30285714, with a leftover of 2.5e-07.