We're dividing 70981669 by 643 
We want to figure out the number of times 70981669 can be divided by 643.

Going ahead to step 1:
When dividing 7 by 643, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 643

Going ahead to step 2:
643 goes into 70 0 times with a remainder of 70.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Bring next digit (9) of the dividend behind the 70 and repeat the process: 709 / 643

Advancing to step 3:
When dividing 709 by 643, we get 1 with a remainder of 66.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 643 from 709 leaves us with 66.
Bring next digit (8) of the dividend behind the 66 and repeat the process: 668 / 643

Advancing to step 4:
The number 643 fits into 668 1 times, leaving a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we subtract 643 from 668, we get 25.
Include the next digit (1) from the dividend after 25, then repeat: 251 / 643

Step 5:
If we divide 251 by 643, we get 0 and a remainder of 251.
Record the quotient 0 as the next digit in the result. 
Result so far: 110.0
The remainder is 251 after subtracting 0 from 251.
Bring next digit (6) of the dividend behind the 251 and repeat the process: 2516 / 643

Going ahead to step 6:
When dividing 2516 by 643, we get 3 with a remainder of 587.
The next digit of our result is 3. 
Result so far: 1103.0
Subtract 1929 from 2516 to get 587.
Grab the next digit (6) from the dividend, add it to 587, then carry on: 5876 / 643

Moving on to step 7:
5876 divided by 643 is 9 with a remainder of 89.
Write down 9 as next digit of the result. 
Result so far: 11039.0
Deduct 5787 from 5876 and we're left with 89.
Bring next digit (9) of the dividend behind the 89 and repeat the process: 899 / 643

Step 8:
899 divided by 643 is 1 with a remainder of 256.
Put 1 as the next digit of the answer. 
Result so far: 110391.0
If we subtract 643 from 899, we get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Moving on to step 9:
643 goes into 2560 3 times with a remainder of 631.
Use 3 as the next digit of our solution. 
Result so far: 110391.3
Subtract 1929 from 2560 to get 631.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6310, and continue the process.

Let's proceed to step 10:
The number 643 fits into 6310 9 times, leaving a remainder of 523.
The next digit of our result is 9. 
Result so far: 110391.39
The remainder is 523 after subtracting 5787 from 6310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5230, and continue the process.

Moving on to step 11:
If we divide 5230 by 643, we get 8 and a remainder of 86.
Record the quotient 8 as the next digit in the result. 
Result so far: 110391.398
If we subtract 5144 from 5230, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 12:
643 goes into 860 1 times with a remainder of 217.
Use 1 as the next digit of our solution. 
Result so far: 110391.3981
If we take 643 away from 860, we end up with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Let's proceed to step 13:
643 can be fit into 2170 3 times, resulting in a remainder of 241.
Use 3 as the next digit of our solution. 
Result so far: 110391.39813
The remainder is 241 after subtracting 1929 from 2170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Let's proceed to step 14:
643 can be fit into 2410 3 times, resulting in a remainder of 481.
The number 3 becomes the next digit in our result. 
Result so far: 110391.398133
If we take 1929 away from 2410, we end up with 481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4810, and continue the process.

In conclusion, the division gives 110391.398133 with a balance of 4.81e-05.