We look at the division of 870380 by 84 
We want to figure out the number of times 870380 can be divided by 84.

Moving on to step 1:
The number 84 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 84

Going ahead to step 2:
If we divide 87 by 84, we get 1 and a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 84 from 87 leaves us with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 84

Advancing to step 3:
When dividing 30 by 84, we get 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 30, we end up with 30.
Fetch the next digit (3) from the dividend, attach it to 30 and continue: 303 / 84

Moving on to step 4:
When dividing 303 by 84, we get 3 with a remainder of 51.
The number 3 becomes the next digit in our result. 
Result so far: 103.0
The remainder is 51 after subtracting 252 from 303.
Take the next digit (8) from the dividend and append it to 51, then repeat: 518 / 84

On to step 5:
The number 84 fits into 518 6 times, leaving a remainder of 14.
The next digit of our result is 6. 
Result so far: 1036.0
Deduct 504 from 518 and we're left with 14.
Grab the next digit (0) from the dividend, add it to 14, then carry on: 140 / 84

On to step 6:
84 goes into 140 1 times with a remainder of 56.
Use 1 as the next digit of our solution. 
Result so far: 10361.0
Subtract 84 from 140 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 7:
The number 84 fits into 560 6 times, leaving a remainder of 56.
The number 6 becomes the next digit in our result. 
Result so far: 10361.6
If we subtract 504 from 560, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 8:
84 goes into 560 6 times with a remainder of 56.
The next digit of our result is 6. 
Result so far: 10361.66
Subtracting 504 from 560 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

In conclusion, the division gives 10361.66 with a balance of 0.056.