21521097 ÷ 658 
Let's see how many times 658 fits into 21521097.

Step 1:
658 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 658

Step 2:
The number 658 fits into 21 0 times, leaving a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 658

On to step 3:
658 can be fit into 215 0 times, resulting in a remainder of 215.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 215 and we're left with 215.
Grab the next digit (2) from the dividend, add it to 215, then carry on: 2152 / 658

Step 4:
If we divide 2152 by 658, we get 3 and a remainder of 178.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 1974 from 2152 leaves us with 178.
Append the next digit (1) from the dividend to 178 and continue with: 1781 / 658

Moving on to step 5:
If we divide 1781 by 658, we get 2 and a remainder of 465.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
If we take 1316 away from 1781, we end up with 465.
Append the next digit (0) from the dividend to 465 and continue with: 4650 / 658

Moving on to step 6:
When dividing 4650 by 658, we get 7 with a remainder of 44.
Record the quotient 7 as the next digit in the result. 
Result so far: 327.0
Deduct 4606 from 4650 and we're left with 44.
Fetch the next digit (9) from the dividend, attach it to 44 and continue: 449 / 658

Let's proceed to step 7:
658 can be fit into 449 0 times, resulting in a remainder of 449.
The next digit of our result is 0. 
Result so far: 3270.0
Subtract 0 from 449 to get 449.
Append the next digit (7) from the dividend to 449 and continue with: 4497 / 658

Let's proceed to step 8:
658 goes into 4497 6 times with a remainder of 549.
Record the quotient 6 as the next digit in the result. 
Result so far: 32706.0
Deduct 3948 from 4497 and we're left with 549.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5490, and continue the process.

Step 9:
658 can be fit into 5490 8 times, resulting in a remainder of 226.
Record the quotient 8 as the next digit in the result. 
Result so far: 32706.8
If we subtract 5264 from 5490, we get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Moving on to step 10:
658 goes into 2260 3 times with a remainder of 286.
The next digit of our result is 3. 
Result so far: 32706.83
The remainder is 286 after subtracting 1974 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Moving on to step 11:
2860 divided by 658 is 4 with a remainder of 228.
The number 4 becomes the next digit in our result. 
Result so far: 32706.834
Deduct 2632 from 2860 and we're left with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Let's proceed to step 12:
658 goes into 2280 3 times with a remainder of 306.
The number 3 becomes the next digit in our result. 
Result so far: 32706.8343
Deduct 1974 from 2280 and we're left with 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

On to step 13:
658 goes into 3060 4 times with a remainder of 428.
Write down 4 as next digit of the result. 
Result so far: 32706.83434
Subtracting 2632 from 3060 leaves us with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

On to step 14:
If we divide 4280 by 658, we get 6 and a remainder of 332.
Use 6 as the next digit of our solution. 
Result so far: 32706.834346
Subtract 3948 from 4280 to get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Advancing to step 15:
The number 658 fits into 3320 5 times, leaving a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 32706.8343465
The remainder is 30 after subtracting 3290 from 3320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 16:
When dividing 300 by 658, we get 0 with a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 32706.8343465
Deduct 0 from 300 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The quotient of the division is 32706.8343465, and the remainder is 3e-07.