You are looking at this: $$\sin\left( \dfrac{\pi}{4} \right) + \dfrac{\cos\left(\tfrac{\pi}{4} \right)}{2}$$ $$\left\lceil \frac{276}{19} \right\rceil +2\log_7(12)$$ and do not see: $$a\times b+c$$ Did you ever think about the fact that due to order of operations: $$a\times b+c=c+a\times b$$