Angela says that she's going to make a " random" guess, meaning she's not going to try to calculate, she's not going to crunch the numbers; she's just going to take a random – we might say a " wild" – guess.
安吉拉说她将进行“随机”猜测，这意味着她不会尝试计算， 也不会计算数字；她只是随机地——我们可以说是“疯狂的” ——猜测。