Write a python program to do the following: A. How many total grains of wheat did the ruler have to pay the inventor? B. A wheat grain weighs about 50mg. How much did the wheat weigh in tons (a ton is 1000 kilos)? C. If 1kilogram of wheat costs $5. How much would that wheat cost nowadays? (convert the number to billions of dollars and separate the output with commas between each thousand for example a sample output should look like $ 5,123,4323,234 billion. D. Which is more? All the gold on earth or the wheat gift?