@@ -0,0 +1,472 @@
+package ru.agolovin;%0A%0Apublic class Calculate%7B%0A%09public double result;%0A%09public double getResult()%7B%0A%09%09return this.result;%0A%09%7D%0A%0A%09public void add(double first, double second) %7B%0A%09%09this.result = first + second;%0A%09%7D%0A%0A%09public void substruct(double first, double second) %7B%0A%09%09this.result = first - second;%0A%09%7D%0A%0A%09public void div(double first, double second) %7B%0A%09%09this.result = first / second;%0A%09%7D%0A%0A%09public void multiple(double first, double second) %7B%0A%09%09this.result = first * second;%0A%09%7D%0A%0A%7D%0A

add task 3