70502059 ÷ 161 
The aim is to understand the frequency of 161 in 70502059.

Going ahead to step 1:
If we divide 7 by 161, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 161

On to step 2:
161 goes into 70 0 times with a remainder of 70.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 70 to get 70.
Append the next digit (5) from the dividend to 70 and continue with: 705 / 161

Step 3:
When dividing 705 by 161, we get 4 with a remainder of 61.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 644 from 705 and we're left with 61.
Bring next digit (0) of the dividend behind the 61 and repeat the process: 610 / 161

Step 4:
When dividing 610 by 161, we get 3 with a remainder of 127.
Put 3 as the next digit of the answer. 
Result so far: 43.0
If we subtract 483 from 610, we get 127.
Include the next digit (2) from the dividend after 127, then repeat: 1272 / 161

Going ahead to step 5:
161 goes into 1272 7 times with a remainder of 145.
The number 7 becomes the next digit in our result. 
Result so far: 437.0
The remainder is 145 after subtracting 1127 from 1272.
Bring next digit (0) of the dividend behind the 145 and repeat the process: 1450 / 161

Step 6:
When dividing 1450 by 161, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 4379.0
If we subtract 1449 from 1450, we get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 161

Advancing to step 7:
The number 161 fits into 15 0 times, leaving a remainder of 15.
The next digit of our result is 0. 
Result so far: 43790.0
Deduct 0 from 15 and we're left with 15.
Append the next digit (9) from the dividend to 15 and continue with: 159 / 161

Let's proceed to step 8:
If we divide 159 by 161, we get 0 and a remainder of 159.
Write down 0 as next digit of the result. 
Result so far: 437900.0
The remainder is 159 after subtracting 0 from 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Let's proceed to step 9:
When dividing 1590 by 161, we get 9 with a remainder of 141.
Put 9 as the next digit of the answer. 
Result so far: 437900.9
If we subtract 1449 from 1590, we get 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Moving on to step 10:
1410 divided by 161 is 8 with a remainder of 122.
Put 8 as the next digit of the answer. 
Result so far: 437900.98
Subtracting 1288 from 1410 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 11:
When dividing 1220 by 161, we get 7 with a remainder of 93.
The next digit of our result is 7. 
Result so far: 437900.987
The remainder is 93 after subtracting 1127 from 1220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Going ahead to step 12:
When dividing 930 by 161, we get 5 with a remainder of 125.
The next digit of our result is 5. 
Result so far: 437900.9875
If we subtract 805 from 930, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 13:
If we divide 1250 by 161, we get 7 and a remainder of 123.
The number 7 becomes the next digit in our result. 
Result so far: 437900.98757
The remainder is 123 after subtracting 1127 from 1250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Advancing to step 14:
When dividing 1230 by 161, we get 7 with a remainder of 103.
Record the quotient 7 as the next digit in the result. 
Result so far: 437900.987577
The remainder is 103 after subtracting 1127 from 1230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

The final result is 437900.987577 with a remainder of 1.03e-05.