15.465 to the nearest hundrenth

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Long division the problem is 40 ➗ 348 = ?

Choose the more precise measurement. 26.4 cm or 8.39 cm