Hi, I need help with the below

Use the infix to postfix conversion algorithm to transform the infix expression to postfix form (use stacks):

1. H * ( I - J ) + K * ( X + Y )
2. A - ( B + C ) + D * ( E + F )

1. Transform the postfix expression to infix form. Show ALL the steps. a. AB*CDE/-+
2. A B-C+DEF-+*
3. A BCDE-+/*EF*-