47993938 ÷ 660 
The aim is to understand the frequency of 660 in 47993938.

Let's proceed to step 1:
The number 660 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 660

Moving on to step 2:
If we divide 47 by 660, we get 0 and a remainder of 47.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 47 after subtracting 0 from 47.
Take the next digit (9) from the dividend and append it to 47, then repeat: 479 / 660

Let's proceed to step 3:
The number 660 fits into 479 0 times, leaving a remainder of 479.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 479, we get 479.
Fetch the next digit (9) from the dividend, attach it to 479 and continue: 4799 / 660

Going ahead to step 4:
4799 divided by 660 is 7 with a remainder of 179.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 4620 from 4799 and we're left with 179.
Take the next digit (3) from the dividend and append it to 179, then repeat: 1793 / 660

On to step 5:
660 can be fit into 1793 2 times, resulting in a remainder of 473.
Record the quotient 2 as the next digit in the result. 
Result so far: 72.0
If we take 1320 away from 1793, we end up with 473.
Fetch the next digit (9) from the dividend, attach it to 473 and continue: 4739 / 660

Let's proceed to step 6:
If we divide 4739 by 660, we get 7 and a remainder of 119.
Record the quotient 7 as the next digit in the result. 
Result so far: 727.0
Deduct 4620 from 4739 and we're left with 119.
Bring next digit (3) of the dividend behind the 119 and repeat the process: 1193 / 660

On to step 7:
1193 divided by 660 is 1 with a remainder of 533.
The next digit of our result is 1. 
Result so far: 7271.0
Deduct 660 from 1193 and we're left with 533.
Include the next digit (8) from the dividend after 533, then repeat: 5338 / 660

Advancing to step 8:
5338 divided by 660 is 8 with a remainder of 58.
Write down 8 as next digit of the result. 
Result so far: 72718.0
If we subtract 5280 from 5338, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 9:
The number 660 fits into 580 0 times, leaving a remainder of 580.
Record the quotient 0 as the next digit in the result. 
Result so far: 72718.0
The remainder is 580 after subtracting 0 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Let's proceed to step 10:
660 goes into 5800 8 times with a remainder of 520.
Put 8 as the next digit of the answer. 
Result so far: 72718.08
If we take 5280 away from 5800, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

On to step 11:
5200 divided by 660 is 7 with a remainder of 580.
The number 7 becomes the next digit in our result. 
Result so far: 72718.087
If we take 4620 away from 5200, we end up with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Moving on to step 12:
When dividing 5800 by 660, we get 8 with a remainder of 520.
Use 8 as the next digit of our solution. 
Result so far: 72718.0878
If we take 5280 away from 5800, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Moving on to step 13:
If we divide 5200 by 660, we get 7 and a remainder of 580.
Use 7 as the next digit of our solution. 
Result so far: 72718.08787
Subtracting 4620 from 5200 leaves us with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Moving on to step 14:
5800 divided by 660 is 8 with a remainder of 520.
The number 8 becomes the next digit in our result. 
Result so far: 72718.087878
If we take 5280 away from 5800, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Moving on to step 15:
660 can be fit into 5200 7 times, resulting in a remainder of 580.
The number 7 becomes the next digit in our result. 
Result so far: 72718.0878787
Subtracting 4620 from 5200 leaves us with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Let's proceed to step 16:
When dividing 5800 by 660, we get 8 with a remainder of 520.
Put 8 as the next digit of the answer. 
Result so far: 72718.08787878
The remainder is 520 after subtracting 5280 from 5800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

The final outcome is 72718.08787878, with a leftover of 5.2e-07.