We're dividing 390172 by 70 
We're looking to find how many times 70 goes into 390172.

Advancing to step 1:
When dividing 3 by 70, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 70

Advancing to step 2:
70 can be fit into 39 0 times, resulting in a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Fetch the next digit (0) from the dividend, attach it to 39 and continue: 390 / 70

Advancing to step 3:
70 can be fit into 390 5 times, resulting in a remainder of 40.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 350 from 390, we get 40.
Append the next digit (1) from the dividend to 40 and continue with: 401 / 70

Going ahead to step 4:
401 divided by 70 is 5 with a remainder of 51.
Put 5 as the next digit of the answer. 
Result so far: 55.0
If we take 350 away from 401, we end up with 51.
Fetch the next digit (7) from the dividend, attach it to 51 and continue: 517 / 70

Moving on to step 5:
When dividing 517 by 70, we get 7 with a remainder of 27.
The next digit of our result is 7. 
Result so far: 557.0
If we take 490 away from 517, we end up with 27.
Bring next digit (2) of the dividend behind the 27 and repeat the process: 272 / 70

On to step 6:
When dividing 272 by 70, we get 3 with a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 5573.0
If we subtract 210 from 272, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 7:
620 divided by 70 is 8 with a remainder of 60.
The next digit of our result is 8. 
Result so far: 5573.8
Subtracting 560 from 620 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
The number 70 fits into 600 8 times, leaving a remainder of 40.
The next digit of our result is 8. 
Result so far: 5573.88
Subtracting 560 from 600 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

In conclusion, the division gives 5573.88 with a balance of 0.04.