Решим уравнения с остатком:
$$\square : 6 = 2870$$ (ост. 5)
$$\square = 2870 \cdot 6 + 5 $$
$$\square = 17220 + 5 $$
$$\square = 17225$$
$$\square : 3 = 8501$$ (ост. 2)
$$\square = 8501 \cdot 3 + 2 $$
$$\square = 25503 + 2 $$
$$\square = 25505$$
$$\square : 4 = 6078$$ (ост. 3)
$$\square = 6078 \cdot 4 + 3 $$
$$\square = 24312 + 3 $$
$$\square = 24315$$
$$\square : 5 = 4870$$ (ост. 4)
$$\square = 4870 \cdot 5 + 4 $$
$$\square = 24350 + 4 $$
$$\square = 24354$$
Ответ: 1) 17225; 2) 25505; 3) 24315; 4) 24354.