Helppp i don't understand this at all and i need the answer fast

i asked my mom and she said "Solution: 108"

Chapter Three Summary

Southern Sudan, 2008

After drinking from the muddy water, Nya fills her jar and puts a donut object on her head and starts home knowing the return trip will take longer.

Southern Sudan, 1985

When Salva leaves the barn, he happens upon the house of a Dinka woman with ritual scarring, the same tribe as his. He is relieved to no longer be alone, but he still fears this stranger. She offers him raw peanuts to eat, and he tells her about how he is running from the gunfire. He thinks of the long war over land and water between…