He opened a browser tab and typed the magic words:

"Oh," he muttered, his pen finally moving with confidence. "That’s all it was."

The assignment was Chapter 4: Fractions and Proportions. To Artyom, the numbers on the page looked like a swarm of angry bees. He had spent two hours staring at Exercise 432, his eraser worn down to a nub, leaving gray smears across the paper.