We look at the division of 73124321 by 121 
Our goal is to divide 73124321 by 121.

Advancing to step 1:
7 divided by 121 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 121

Let's proceed to step 2:
121 goes into 73 0 times with a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 73 and we're left with 73.
Fetch the next digit (1) from the dividend, attach it to 73 and continue: 731 / 121

Moving on to step 3:
The number 121 fits into 731 6 times, leaving a remainder of 5.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 726 from 731 leaves us with 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 121

Let's proceed to step 4:
The number 121 fits into 52 0 times, leaving a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 60.0
Deduct 0 from 52 and we're left with 52.
Take the next digit (4) from the dividend and append it to 52, then repeat: 524 / 121

Moving on to step 5:
When dividing 524 by 121, we get 4 with a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 604.0
Subtracting 484 from 524 leaves us with 40.
Append the next digit (3) from the dividend to 40 and continue with: 403 / 121

On to step 6:
When dividing 403 by 121, we get 3 with a remainder of 40.
Use 3 as the next digit of our solution. 
Result so far: 6043.0
If we subtract 363 from 403, we get 40.
Include the next digit (2) from the dividend after 40, then repeat: 402 / 121

Going ahead to step 7:
When dividing 402 by 121, we get 3 with a remainder of 39.
The next digit of our result is 3. 
Result so far: 60433.0
The remainder is 39 after subtracting 363 from 402.
Include the next digit (1) from the dividend after 39, then repeat: 391 / 121

On to step 8:
121 can be fit into 391 3 times, resulting in a remainder of 28.
Record the quotient 3 as the next digit in the result. 
Result so far: 604333.0
Deduct 363 from 391 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 9:
When dividing 280 by 121, we get 2 with a remainder of 38.
The next digit of our result is 2. 
Result so far: 604333.2
The remainder is 38 after subtracting 242 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 10:
When dividing 380 by 121, we get 3 with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 604333.23
If we take 363 away from 380, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 11:
121 can be fit into 170 1 times, resulting in a remainder of 49.
Record the quotient 1 as the next digit in the result. 
Result so far: 604333.231
If we take 121 away from 170, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 12:
If we divide 490 by 121, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 604333.2314
If we take 484 away from 490, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 13:
60 divided by 121 is 0 with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 604333.2314
If we take 0 away from 60, we end up 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.

Let's proceed to step 14:
When dividing 600 by 121, we get 4 with a remainder of 116.
The number 4 becomes the next digit in our result. 
Result so far: 604333.231404
Deduct 484 from 600 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Let's proceed to step 15:
The number 121 fits into 1160 9 times, leaving a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 604333.2314049
If we take 1089 away from 1160, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 16:
The number 121 fits into 710 5 times, leaving a remainder of 105.
The next digit of our result is 5. 
Result so far: 604333.23140495
Subtract 605 from 710 to get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

The quotient of the division is 604333.23140495, and the remainder is 1.05e-07.