915870 ÷ 75 
We want to figure out the number of times 915870 can be divided by 75.

On to step 1:
75 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 75

Going ahead to step 2:
75 can be fit into 91 1 times, resulting in a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 75 away from 91, we end up with 16.
Take the next digit (5) from the dividend and append it to 16, then repeat: 165 / 75

Going ahead to step 3:
75 goes into 165 2 times with a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Deduct 150 from 165 and we're left with 15.
Bring next digit (8) of the dividend behind the 15 and repeat the process: 158 / 75

Moving on to step 4:
158 divided by 75 is 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 122.0
Subtract 150 from 158 to get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 75

Advancing to step 5:
75 can be fit into 87 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1221.0
If we subtract 75 from 87, we get 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 75

Going ahead to step 6:
When dividing 120 by 75, we get 1 with a remainder of 45.
Write down 1 as next digit of the result. 
Result so far: 12211.0
Deduct 75 from 120 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 7:
75 goes into 450 6 times with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 12211.6
If we subtract 450 from 450, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
75 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12211.6
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
0 divided by 75 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12211.6
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 12211.6, and the remainder is 0.0.