What is the term for the process of introducing young

If,

40 – 14 means 560,

168 + 8 means 21,

26 ÷ 2 means 28,

8 x 7 means 1,

then 410 – 7 x 290 ÷ 350 + 7 x 21 = ?

After interchanging the given two signs, what will be the value of the given equation? + and ÷

144 ÷ 12 + 36 × 3 - 18

Which among the given operators should replace the “%” (in the same order) in the given expression below:

8 % 13 % 8 % 69 % 36 % 9

If '+' means ' - ', ' X ' means '+', ' - ' means '÷' and '÷' means ' X ', then what is the value of the following expression?

If “+” means “minus”, “×” means “divided by”, “÷” means “plus”, and “-“ means then “multiplied by”

If ' + ' means ' × ', ' - ' means ' ÷ ', ' × ' means ' - ' and ' ÷ ' means ' + ' then 18 × 9 ÷ 3 + 8 - 4 = ?

If the following interchanges are made in signs, then what would be the value of the following expression?

48 X 63 + 2 ÷ 9 - 35 

After interchanging "×" and "÷", "7" and "4", which of the following equations becomes correct?