By the way this problem starts where instead of assigning 11 a new name (English Eleven), in swahili you say Ten and One( Kumi na moja), that totally messes up the possibility of assigning the above problem an answer. Anyone who studied maths in TZ?, maybe you can tell us. You cannot solve this without assigning, 11,12,13...new swahili(i think kikuyu, kikamba, etc were clever enough to use "mirongo" correct me if am wrong, am "from" somewhere there but i do not know counting very well) words for the above.
Ras Kienyeji Man