When multiplying two digits by two digits in vertical form, what does the number on the tenth digit of the multiplier represent

When multiplying two digits by two digits in vertical form, what does the number on the tenth digit of the multiplier represent

The number on the tenth digit of the multiplier represents tens

How to multiply two digit sequence by two digit sequence and precautions should be detailed

1 2
1 2
————
2 4
1 2
————
1 2 4
The example is as above
To align the items, don't forget to carry

35 by 35 by 99 out of 100
Simple calculation

99 of 35 × 35 × 100
=A 35 × 35 chicken is 99% of 100
=180×99
one hundred
=1620
one hundred
=16 and 20 out of 100