We look at the division of 877436 by 72 
We want to figure out the number of times 877436 can be divided by 72.

Step 1:
The number 72 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 72

Advancing to step 2:
When dividing 87 by 72, we get 1 with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 15 after subtracting 72 from 87.
Grab the next digit (7) from the dividend, add it to 15, then carry on: 157 / 72

Moving on to step 3:
If we divide 157 by 72, we get 2 and a remainder of 13.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 144 from 157, we get 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 72

Step 4:
If we divide 134 by 72, we get 1 and a remainder of 62.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
Deduct 72 from 134 and we're left with 62.
Take the next digit (3) from the dividend and append it to 62, then repeat: 623 / 72

On to step 5:
623 divided by 72 is 8 with a remainder of 47.
Put 8 as the next digit of the answer. 
Result so far: 1218.0
If we subtract 576 from 623, we get 47.
Grab the next digit (6) from the dividend, add it to 47, then carry on: 476 / 72

Step 6:
72 can be fit into 476 6 times, resulting in a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 12186.0
If we subtract 432 from 476, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 7:
The number 72 fits into 440 6 times, leaving a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 12186.6
Subtract 432 from 440 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
When dividing 80 by 72, we get 1 with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 12186.61
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
72 can be fit into 80 1 times, resulting in a remainder of 8.
The next digit of our result is 1. 
Result so far: 12186.611
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 12186.611, with a leftover of 0.0008.