Rong Zhan's entire body went completely rigid.
The expression on his face twisted into something completely unrecognizable.
Are you kidding me, asking him to calculate this problem?
Well, it's just multiplication anyway. With paper and pen, you can slowly write out the equation and eventually solve it.
Rong Zhan felt really embarrassed to use the calculator on his phone, especially with Yun Rui's eyes staring at him... Face flushed, Rong Zhan began slowly calculating Yun Rui's six-digit-by-six-digit multiplication problem on paper.
It was... really hard to calculate. The method was known, as anyone who had attended elementary school knew multiplication, but...
Rong Zhan really wanted to give up, but seeing Yun Rui's eyes, he had no choice but to hold back tears and painfully continue calculating.
He didn't check the time, but Rong Zhan felt that when he finally got the answer, it had probably taken three to five minutes.
