Long description of the second graphic on 3_21_1a.html

Long description of the equation 356 × 7 = 2,492:

356 × 7 =2,492

7 × 6 = 42; regroup as 4 tens and 2 ones.
7 × 50 = 350; regroup as 3 hundreds 5 tens.
Add the regrouped 4 tens to 5 tens.
7 × 300 = 2,100; add the regrouped 3 hundreds to 2,100