60946857 divided by 378 
The aim is to understand the frequency of 378 in 60946857.

Moving on to step 1:
When dividing 6 by 378, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 378

Moving on to step 2:
60 divided by 378 is 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 60, we get 60.
Append the next digit (9) from the dividend to 60 and continue with: 609 / 378

On to step 3:
When dividing 609 by 378, we get 1 with a remainder of 231.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 378 from 609, we get 231.
Take the next digit (4) from the dividend and append it to 231, then repeat: 2314 / 378

Going ahead to step 4:
When dividing 2314 by 378, we get 6 with a remainder of 46.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
The remainder is 46 after subtracting 2268 from 2314.
Grab the next digit (6) from the dividend, add it to 46, then carry on: 466 / 378

Step 5:
The number 378 fits into 466 1 times, leaving a remainder of 88.
Put 1 as the next digit of the answer. 
Result so far: 161.0
If we take 378 away from 466, we end up with 88.
Append the next digit (8) from the dividend to 88 and continue with: 888 / 378

Step 6:
378 can be fit into 888 2 times, resulting in a remainder of 132.
Record the quotient 2 as the next digit in the result. 
Result so far: 1612.0
Deduct 756 from 888 and we're left with 132.
Append the next digit (5) from the dividend to 132 and continue with: 1325 / 378

Going ahead to step 7:
378 can be fit into 1325 3 times, resulting in a remainder of 191.
The next digit of our result is 3. 
Result so far: 16123.0
The remainder is 191 after subtracting 1134 from 1325.
Fetch the next digit (7) from the dividend, attach it to 191 and continue: 1917 / 378

Going ahead to step 8:
When dividing 1917 by 378, we get 5 with a remainder of 27.
The number 5 becomes the next digit in our result. 
Result so far: 161235.0
Subtracting 1890 from 1917 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 9:
378 goes into 270 0 times with a remainder of 270.
Write down 0 as next digit of the result. 
Result so far: 161235.0
Subtracting 0 from 270 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

On to step 10:
When dividing 2700 by 378, we get 7 with a remainder of 54.
The number 7 becomes the next digit in our result. 
Result so far: 161235.07
The remainder is 54 after subtracting 2646 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 11:
540 divided by 378 is 1 with a remainder of 162.
Use 1 as the next digit of our solution. 
Result so far: 161235.071
Subtracting 378 from 540 leaves us with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Step 12:
1620 divided by 378 is 4 with a remainder of 108.
Record the quotient 4 as the next digit in the result. 
Result so far: 161235.0714
Deduct 1512 from 1620 and we're left with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

On to step 13:
378 can be fit into 1080 2 times, resulting in a remainder of 324.
The next digit of our result is 2. 
Result so far: 161235.07142
Deduct 756 from 1080 and we're left with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 14:
If we divide 3240 by 378, we get 8 and a remainder of 216.
The number 8 becomes the next digit in our result. 
Result so far: 161235.071428
If we subtract 3024 from 3240, we get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

On to step 15:
2160 divided by 378 is 5 with a remainder of 270.
The next digit of our result is 5. 
Result so far: 161235.0714285
If we subtract 1890 from 2160, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 16:
378 can be fit into 2700 7 times, resulting in a remainder of 54.
The number 7 becomes the next digit in our result. 
Result so far: 161235.07142857
Deduct 2646 from 2700 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 161235.07142857, with a leftover of 5.4e-08.