 
<translate> A rana ta biyu, mai gudanarwa ya karbi 16 / 2 = 8 sababbin imel. A rana ta uku, ya karɓi 8 / 2 = 4 sababbin imel. A rana ta huɗu, ya karɓi 4 / 2 = 2 sabon imel. Saboda haka, a lokacin tafiya duka zai karbi 16 + 8 + 4 + 2 = 30 sababbin imel. Amsar ƙarshe: 30. <eng> On the second day, the executive receives 16 / 2 = 8 new emails. On the third day, he receives 8 / 2 = 4 new emails. On the fourth day, he receives 4 / 2 = 2 new emails. Therefore, during the entire trip he will have received 16 + 8 + 4 + 2 = 30 new emails. The final answer: 30. 