We're dividing 69881861 by 553 
We want to divide 69881861 by 553.

Let's proceed to step 1:
6 divided by 553 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 553

Step 2:
553 can be fit into 69 0 times, resulting in a remainder of 69.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 69 leaves us with 69.
Bring next digit (8) of the dividend behind the 69 and repeat the process: 698 / 553

Going ahead to step 3:
553 goes into 698 1 times with a remainder of 145.
The next digit of our result is 1. 
Result so far: 1.0
If we take 553 away from 698, we end up with 145.
Grab the next digit (8) from the dividend, add it to 145, then carry on: 1458 / 553

Moving on to step 4:
The number 553 fits into 1458 2 times, leaving a remainder of 352.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we subtract 1106 from 1458, we get 352.
Grab the next digit (1) from the dividend, add it to 352, then carry on: 3521 / 553

Advancing to step 5:
If we divide 3521 by 553, we get 6 and a remainder of 203.
The next digit of our result is 6. 
Result so far: 126.0
Deduct 3318 from 3521 and we're left with 203.
Bring next digit (8) of the dividend behind the 203 and repeat the process: 2038 / 553

Moving on to step 6:
553 goes into 2038 3 times with a remainder of 379.
Write down 3 as next digit of the result. 
Result so far: 1263.0
If we take 1659 away from 2038, we end up with 379.
Grab the next digit (6) from the dividend, add it to 379, then carry on: 3796 / 553

Step 7:
The number 553 fits into 3796 6 times, leaving a remainder of 478.
Use 6 as the next digit of our solution. 
Result so far: 12636.0
If we subtract 3318 from 3796, we get 478.
Take the next digit (1) from the dividend and append it to 478, then repeat: 4781 / 553

Step 8:
4781 divided by 553 is 8 with a remainder of 357.
Put 8 as the next digit of the answer. 
Result so far: 126368.0
Subtract 4424 from 4781 to get 357.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

Moving on to step 9:
553 goes into 3570 6 times with a remainder of 252.
Record the quotient 6 as the next digit in the result. 
Result so far: 126368.6
Deduct 3318 from 3570 and we're left with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Advancing to step 10:
553 goes into 2520 4 times with a remainder of 308.
Put 4 as the next digit of the answer. 
Result so far: 126368.64
Subtracting 2212 from 2520 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Step 11:
The number 553 fits into 3080 5 times, leaving a remainder of 315.
Record the quotient 5 as the next digit in the result. 
Result so far: 126368.645
Subtract 2765 from 3080 to get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Let's proceed to step 12:
If we divide 3150 by 553, we get 5 and a remainder of 385.
The next digit of our result is 5. 
Result so far: 126368.6455
Subtract 2765 from 3150 to get 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

The final outcome is 126368.6455, with a leftover of 0.00385.