There is a big circle in the middle, 10 in it, a small circle in the top, 2 in it, two small circles in the bottom, 3 on the left and 5 on the right. There is a big circle in the middle, 30 in it, a small circle in the top, 3 in it, two small circles in the bottom, 5 on the left and 6 on the right. There is a big circle in the middle, 64 in it, 4 in it, two small circles in the bottom and 6 on the left, The last one on the right is 8. The small circle on the top is 5 inside, and the two small circles on the bottom are 9 on the left and 4 on the right. How about the number of the big circle in the middle of the last one

There is a big circle in the middle, 10 in it, a small circle in the top, 2 in it, two small circles in the bottom, 3 on the left and 5 on the right. There is a big circle in the middle, 30 in it, a small circle in the top, 3 in it, two small circles in the bottom, 5 on the left and 6 on the right. There is a big circle in the middle, 64 in it, 4 in it, two small circles in the bottom and 6 on the left, The last one on the right is 8. The small circle on the top is 5 inside, and the two small circles on the bottom are 9 on the left and 4 on the right. How about the number of the big circle in the middle of the last one

simple
The product of three small circle numbers △ 3 = the number in the middle
5×9×4÷3=60