Hm! I've come across this as "Russian Peasant Multiplication" https://www.wikihow.com/Multiply-Using-the-Russian-Peasant-Method https://www.wikihow.com/Multiply

Hm! I've come across this as "Russian Peasant Multiplication" https://www.wikihow.com/Multiply-Using-the-Russian-Peasant-Method https://www.wikihow.com/Multiply-Using-the-Russian-Peasant-M... Easier to digest I think to break TFA into two conceptual pieces 1. the representational complexities of roman numerals (remember not to use prefix notation; what does each character mean) 2. the actual meat of the multiplication algorithm (russian peasant method)