gistfile1.go

func (multiplication *Multiplication) Flatten() []Numeric {
	first := multiplication.first.Simplify()
	second := multiplication.second.Simplify()

	result := make([]Numeric)

	if m, ok := first.(*Multiplication); ok {
		result = append(result, m.Flatten())
	} else {
		result = append(result, first)
	}

	if m, ok := second.(*Multiplication); ok {
		result = append(result, m.Flatten())
	} else {
		result = append(result, second)
	}

	return result
}