851673 ÷ 70 
Our goal is to divide 851673 by 70.

Let's proceed to step 1:
70 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 70

Let's proceed to step 2:
When dividing 85 by 70, we get 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 70 from 85 and we're left with 15.
Fetch the next digit (1) from the dividend, attach it to 15 and continue: 151 / 70

On to step 3:
When dividing 151 by 70, we get 2 with a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 140 away from 151, we end up with 11.
Fetch the next digit (6) from the dividend, attach it to 11 and continue: 116 / 70

Moving on to step 4:
70 can be fit into 116 1 times, resulting in a remainder of 46.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
Subtract 70 from 116 to get 46.
Fetch the next digit (7) from the dividend, attach it to 46 and continue: 467 / 70

Let's proceed to step 5:
70 can be fit into 467 6 times, resulting in a remainder of 47.
Use 6 as the next digit of our solution. 
Result so far: 1216.0
Deduct 420 from 467 and we're left with 47.
Append the next digit (3) from the dividend to 47 and continue with: 473 / 70

Going ahead to step 6:
70 goes into 473 6 times with a remainder of 53.
Write down 6 as next digit of the result. 
Result so far: 12166.0
If we take 420 away from 473, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 7:
530 divided by 70 is 7 with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 12166.7
Subtracting 490 from 530 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.

Going ahead to step 8:
70 can be fit into 400 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 12166.75
Deduct 350 from 400 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 9:
The number 70 fits into 500 7 times, leaving a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 12166.757
The remainder is 10 after subtracting 490 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
70 can be fit into 100 1 times, resulting in a remainder of 30.
Write down 1 as next digit of the result. 
Result so far: 12166.7571
Deduct 70 from 100 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 11:
70 goes into 300 4 times with a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 12166.75714
Subtracting 280 from 300 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 12:
200 divided by 70 is 2 with a remainder of 60.
Record the quotient 2 as the next digit in the result. 
Result so far: 12166.757142
If we subtract 140 from 200, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 13:
When dividing 600 by 70, we get 8 with a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 12166.7571428
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.

On to step 14:
When dividing 400 by 70, we get 5 with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 12166.75714285
If we take 350 away from 400, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 12166.75714285, with a leftover of 5e-08.