In a peculiar mathematical operation, the numbers are first changed as per the following rule :
1, 2, 3 changed to 14, 5, 6 changed to 2
7, 8, 9 changed to 3
'O' remains unchanged.
The various mathematical operations are then carried out and the result obtained at the
end is once again changed as per the.above rule.
What is the net result of 825 - 437 + 302 =?
