How to multiply the values ​​of n tables, and then add the resulting values ​​n times?

Question

Python

How to do something similar to the sum of products from exel, in the i position of the list there is a list with values ​​\u200b\u200bthat need to be multiplied, and then add all possible products together. So for a list like this:

sale_transactions = 

The answer should be 103462, or otherwise the sum of the numbers given by the following code:

for i in range(0, len(sale_transactions)):
    sale_transactions[i][4] * sale_transactions[i][5]
    print(purchase_transactions)

Answer 1

I understood only from the 10th time what it was about -))
you can do it like this:

sum = 0
for row in sale_transactions:
   sum += row[4] * row[5]
print(sum)

To understand your language, you need common words that everyone else will understand
YOUR question:

How to multiply the values ​​of n tables, and then add the resulting values ​​n times?

["03/16/2020 12:31:00 PM", "RUB", "BANEP", "sale", 47, 1294, "SBER", "MOEX"] - this is called a list and not a table, in python there is no such thing as the sale_transactions table
is also a list, which consists of lists

Answer 2

Do you yourself understand what you need to multiply and add? )
and your meaningless)

for i in range(0, len(sale_transactions)):
    sale_transactions[i][4] * sale_transactions[i][5]
    print(purchase_transactions)

Answer 3

second line in code

purchase_transactions=purchase_transactions+sale_transactions[i][4] * sale_transactions[i][5]

Well, the last line, of course, without otsupov.
And how much she counts - counts so much.