# 108 - bet
# Nazorat ishi
# 2 - masala

# ko'paytmani hisoblash uchun:
k = 1
# ushbu siklda elementlar => (2, 4, 6, ... ,40)
for i in range(2, 41, 2):
# har bir qadamdagi sonni k ga ko'paytiramiz:
k *= i
# oynaga ifodani ko'rsatish uchun:
if i < 40:
print(f"{i}", end=" * ")
else:
print(f"{i}", end=" = ")
# natijani chiqarish:
print(k)