a complex number represent string form realimaginaryi wherereal real integer range 100 100imaginary imaginary integer range 100 100i2 1given complex number num1 num2 string return stre complex number represent multiplication example 1input num1 11i num2 11ioutput 02iexplanation 1 1 1 i2 2 2i need convert form 02iexample 2input num1 11i num2 11ioutput 02iexplanation 1 1 1 i2 2 2i need convert form 02i Constraintsnum1 num2 valid complex number