90420873 divided by 140 
We want to figure out the number of times 90420873 can be divided by 140.

Step 1:
140 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 140

Let's proceed to step 2:
When dividing 90 by 140, we get 0 with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Take the next digit (4) from the dividend and append it to 90, then repeat: 904 / 140

Going ahead to step 3:
140 goes into 904 6 times with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 6.0
The remainder is 64 after subtracting 840 from 904.
Bring next digit (2) of the dividend behind the 64 and repeat the process: 642 / 140

Step 4:
When dividing 642 by 140, we get 4 with a remainder of 82.
Use 4 as the next digit of our solution. 
Result so far: 64.0
Subtracting 560 from 642 leaves us with 82.
Fetch the next digit (0) from the dividend, attach it to 82 and continue: 820 / 140

Step 5:
The number 140 fits into 820 5 times, leaving a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 645.0
Deduct 700 from 820 and we're left with 120.
Grab the next digit (8) from the dividend, add it to 120, then carry on: 1208 / 140

Step 6:
140 can be fit into 1208 8 times, resulting in a remainder of 88.
The number 8 becomes the next digit in our result. 
Result so far: 6458.0
Deduct 1120 from 1208 and we're left with 88.
Include the next digit (7) from the dividend after 88, then repeat: 887 / 140

Going ahead to step 7:
The number 140 fits into 887 6 times, leaving a remainder of 47.
Record the quotient 6 as the next digit in the result. 
Result so far: 64586.0
If we take 840 away from 887, we end up with 47.
Grab the next digit (3) from the dividend, add it to 47, then carry on: 473 / 140

Going ahead to step 8:
When dividing 473 by 140, we get 3 with a remainder of 53.
Put 3 as the next digit of the answer. 
Result so far: 645863.0
Subtracting 420 from 473 leaves us 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.

Step 9:
If we divide 530 by 140, we get 3 and a remainder of 110.
Write down 3 as next digit of the result. 
Result so far: 645863.3
The remainder is 110 after subtracting 420 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 10:
140 can be fit into 1100 7 times, resulting in a remainder of 120.
Write down 7 as next digit of the result. 
Result so far: 645863.37
If we subtract 980 from 1100, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 11:
140 goes into 1200 8 times with a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 645863.378
Deduct 1120 from 1200 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 12:
800 divided by 140 is 5 with a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 645863.3785
If we subtract 700 from 800, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 13:
The number 140 fits into 1000 7 times, leaving a remainder of 20.
The next digit of our result is 7. 
Result so far: 645863.37857
If we take 980 away from 1000, we end up 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.

Going ahead to step 14:
The number 140 fits into 200 1 times, leaving a remainder of 60.
Use 1 as the next digit of our solution. 
Result so far: 645863.378571
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.

Step 15:
The number 140 fits into 600 4 times, leaving a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 645863.3785714
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 16:
The number 140 fits into 400 2 times, leaving a remainder of 120.
The number 2 becomes the next digit in our result. 
Result so far: 645863.37857142
Deduct 280 from 400 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

In conclusion, the division gives 645863.37857142 with a balance of 1.2e-07.