Śesānyankena Caramena

The Sutra Śesānyankena Caramena means “The remainders by the last digit”. For instance if one wants to find decimal value of 1/7. The remainders are 3, 2, 6, 4, 5 and 1. Multiplied by 7 these remainders give successively 21, 14, 42, 28, 35 and 7. Ignoring the left hand side digits we simply put down the last digit of each product and we get 1/7 = .14 28 57
Now, this 12th Sutra has a subsutra Vilokanam. Vilokanam means “mere observation”