if (  isEqualFloat(1.98, ( 1.8 * (1 + 10/100) )) ) {
  # do something 
  ...
}

# for high precision comparison
if (  isEqualFloat(1.98, ( 1.8 * (1 + 10/100) ), 0.0000001) ) {
  # do something 
  ...
}