From the BEATCALC
mailing list:
a weekly service from B. Lee Clay,
archived here by the Math Forum.
To subscribe to the BEATCALC mailing list,
write to BEATCALC@aol.com.
Dividing a 2-digit number by 375
Select a 2-digit number.
Multiply by 8.
Divide the product by 3 (express remainder as a fraction).
Move the decimal point three places to the left.
Example:
The number chosen to divide by 375 is 32.
Multiply by 8: 8 x 32 = 240 + 16 = 256
Divide by 3: 256/3 = 85.3 1/3
Move the decimal point 3 places to the left: .0853 1/3
So 32 divided by 375 = .0853 1/3.
See the pattern?
The number chosen to divide by 375 is 61.
Multiply by 8: 8 x 61 = 480 + 8 = 488
Divide by 3: 488/3 = 162 2/3
Move the decimal point 3 places to the left: .162 2/3