Multiplication Level 23: 3d x 3d (large h and u). multi-digit window train. 1. Left Edge789 times 8671. Left EdgeUse the highlighted left edge pair.789times8677x8562 pairs3 pairs2 pairs9x7Active multiplication train windowraw windowsraw -> 56 | _ | _ | _ | _Use the highlighted left edge pair. Carry waits for settle.2. Left Cross2. Left CrossAdd both highlighted pairs.789times8677x8562 pairs1063 pairs2 pairs9x7Active multiplication train windowraw windowsraw -> 56 | 106 | _ | _ | _Add both highlighted pairs. Carry waits for settle.3. Center Stack3. Center StackAdd all 3 highlighted pairs.789times8677x8562 pairs1063 pairs1692 pairs9x7Active multiplication train windowraw windowsraw -> 56 | 106 | 169 | _ | _Add all 3 highlighted pairs. Carry waits for settle.4. Right Cross4. Right CrossAdd both highlighted pairs.789times8677x8562 pairs1063 pairs1692 pairs1109x7Active multiplication train windowraw windowsraw -> 56 | 106 | 169 | 110 | _Add both highlighted pairs. Carry waits for settle.5. Right Edge5. Right EdgeUse the highlighted right edge pair.789times8677x8562 pairs1063 pairs1692 pairs1109x763Active multiplication train windowraw windowsraw -> 56 | 106 | 169 | 110 | 63Use the highlighted right edge pair. Carry waits for settle.6. Settle strip6. Settle stripSettle once.Keep ones; carry moves left.raw windows56 | 106 | 169 | 110 | 63settled strip68 | 4 | 0 | 6 | 3Final multiplication answer56 | 106 | 169 | 110 | 63 -> 684063.